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Finding the Fourth Proportional to 1,250,956,436.03, 1,726,315,144.30 and 686,450,762.54

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Solution

The fourth proportional to 1,250,956,436.03, 1,726,315,144.30 and 686,450,762.54 is: 947,299,452.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,250,956,436.03 : 1,726,315,144.30 = 686,450,762.54 : x
  2. Step 2: Convert to fraction form
    1,250,956,436.03/1,726,315,144.30 = 686,450,762.54/x
  3. Step 3: Cross multiply
    1,250,956,436.03x = 1,726,315,144.30 × 686,450,762.54
  4. Step 4: Simplify right side
    1,250,956,436.03x = 1,185,030,347,180,453,376
  5. Step 5: Solve for x
    x = 1,185,030,347,180,453,376/1,250,956,436.03
  6. Step 6: Final answer
    x = 947,299,452.69

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Double scale
Find fourth proportional to 1,250,956,437.03, 1,726,315,145.68 and 686,450,763.54
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.