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Finding the Fourth Proportional to 69,958.49, 96,543.90 and 38,129.13

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Solution

The fourth proportional to 69,958.49, 96,543.90 and 38,129.13 is: 52,618.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,958.49 : 96,543.90 = 38,129.13 : x
  2. Step 2: Convert to fraction form
    69,958.49/96,543.90 = 38,129.13/x
  3. Step 3: Cross multiply
    69,958.49x = 96,543.90 × 38,129.13
  4. Step 4: Simplify right side
    69,958.49x = 3,681,134,913.81
  5. Step 5: Solve for x
    x = 3,681,134,913.81/69,958.49
  6. Step 6: Final answer
    x = 52,618.85

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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.