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Finding the Fourth Proportional to 70,447.71, 97,221.59 and 38,617.95

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Solution

The fourth proportional to 70,447.71, 97,221.59 and 38,617.95 is: 53,294.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,447.71 : 97,221.59 = 38,617.95 : x
  2. Step 2: Convert to fraction form
    70,447.71/97,221.59 = 38,617.95/x
  3. Step 3: Cross multiply
    70,447.71x = 97,221.59 × 38,617.95
  4. Step 4: Simplify right side
    70,447.71x = 3,754,498,308.45
  5. Step 5: Solve for x
    x = 3,754,498,308.45/70,447.71
  6. Step 6: Final answer
    x = 53,294.82

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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.