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Finding the Fourth Proportional to 70,865.73, 97,713.54 and 52,930.47

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Solution

The fourth proportional to 70,865.73, 97,713.54 and 52,930.47 is: 72,983.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,865.73 : 97,713.54 = 52,930.47 : x
  2. Step 2: Convert to fraction form
    70,865.73/97,713.54 = 52,930.47/x
  3. Step 3: Cross multiply
    70,865.73x = 97,713.54 × 52,930.47
  4. Step 4: Simplify right side
    70,865.73x = 5,172,023,597.56
  5. Step 5: Solve for x
    x = 5,172,023,597.56/70,865.73
  6. Step 6: Final answer
    x = 72,983.42

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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.