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Finding the Fourth Proportional to 70,140.49, 96,793.88 and 38,309.47

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Solution

The fourth proportional to 70,140.49, 96,793.88 and 38,309.47 is: 52,867.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,140.49 : 96,793.88 = 38,309.47 : x
  2. Step 2: Convert to fraction form
    70,140.49/96,793.88 = 38,309.47/x
  3. Step 3: Cross multiply
    70,140.49x = 96,793.88 × 38,309.47
  4. Step 4: Simplify right side
    70,140.49x = 3,708,121,952.17
  5. Step 5: Solve for x
    x = 3,708,121,952.17/70,140.49
  6. Step 6: Final answer
    x = 52,867.06

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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.