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Finding the Fourth Proportional to 679,543.92, 937,781.28 and 373,633.56

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Solution

The fourth proportional to 679,543.92, 937,781.28 and 373,633.56 is: 515,620.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,543.92 : 937,781.28 = 373,633.56 : x
  2. Step 2: Convert to fraction form
    679,543.92/937,781.28 = 373,633.56/x
  3. Step 3: Cross multiply
    679,543.92x = 937,781.28 × 373,633.56
  4. Step 4: Simplify right side
    679,543.92x = 350,386,558,147.76
  5. Step 5: Solve for x
    x = 350,386,558,147.76/679,543.92
  6. Step 6: Final answer
    x = 515,620.18

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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.