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Finding the Fourth Proportional to 523,170.10, 784,755.15 and 257,101.30

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Solution

The fourth proportional to 523,170.10, 784,755.15 and 257,101.30 is: 385,651.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,170.10 : 784,755.15 = 257,101.30 : x
  2. Step 2: Convert to fraction form
    523,170.10/784,755.15 = 257,101.30/x
  3. Step 3: Cross multiply
    523,170.10x = 784,755.15 × 257,101.30
  4. Step 4: Simplify right side
    523,170.10x = 201,761,569,246.70
  5. Step 5: Solve for x
    x = 201,761,569,246.70/523,170.10
  6. Step 6: Final answer
    x = 385,651.95

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.