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Finding the Fourth Proportional to 672,957.19, 928,781.67 and 431,512.39

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Solution

The fourth proportional to 672,957.19, 928,781.67 and 431,512.39 is: 595,551.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,957.19 : 928,781.67 = 431,512.39 : x
  2. Step 2: Convert to fraction form
    672,957.19/928,781.67 = 431,512.39/x
  3. Step 3: Cross multiply
    672,957.19x = 928,781.67 × 431,512.39
  4. Step 4: Simplify right side
    672,957.19x = 400,780,798,209.89
  5. Step 5: Solve for x
    x = 400,780,798,209.89/672,957.19
  6. Step 6: Final answer
    x = 595,551.70

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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.