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Finding the Fourth Proportional to 622,777.60, 859,496.58 and 381,219.80

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Solution

The fourth proportional to 622,777.60, 859,496.58 and 381,219.80 is: 526,122.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,777.60 : 859,496.58 = 381,219.80 : x
  2. Step 2: Convert to fraction form
    622,777.60/859,496.58 = 381,219.80/x
  3. Step 3: Cross multiply
    622,777.60x = 859,496.58 × 381,219.80
  4. Step 4: Simplify right side
    622,777.60x = 327,657,114,328.28
  5. Step 5: Solve for x
    x = 327,657,114,328.28/622,777.60
  6. Step 6: Final answer
    x = 526,122.19

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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.