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Finding the Fourth Proportional to 624,168.38, 862,234.18 and 496,680.86

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Solution

The fourth proportional to 624,168.38, 862,234.18 and 496,680.86 is: 686,121.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,168.38 : 862,234.18 = 496,680.86 : x
  2. Step 2: Convert to fraction form
    624,168.38/862,234.18 = 496,680.86/x
  3. Step 3: Cross multiply
    624,168.38x = 862,234.18 × 496,680.86
  4. Step 4: Simplify right side
    624,168.38x = 428,255,214,957.68
  5. Step 5: Solve for x
    x = 428,255,214,957.68/624,168.38
  6. Step 6: Final answer
    x = 686,121.29

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Double scale
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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.