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Finding the Fourth Proportional to 1,416,534, 1,954,816.92 and 780,630

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Solution

The fourth proportional to 1,416,534, 1,954,816.92 and 780,630 is: 1,077,269.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,416,534 : 1,954,816.92 = 780,630 : x
  2. Step 2: Convert to fraction form
    1,416,534/1,954,816.92 = 780,630/x
  3. Step 3: Cross multiply
    1,416,534x = 1,954,816.92 × 780,630
  4. Step 4: Simplify right side
    1,416,534x = 1,525,988,732,259.60
  5. Step 5: Solve for x
    x = 1,525,988,732,259.60/1,416,534
  6. Step 6: Final answer
    x = 1,077,269.40

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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.