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Finding the Fourth Proportional to 70,765.27, 97,654.68 and 38,934.70

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Solution

The fourth proportional to 70,765.27, 97,654.68 and 38,934.70 is: 53,729.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,765.27 : 97,654.68 = 38,934.70 : x
  2. Step 2: Convert to fraction form
    70,765.27/97,654.68 = 38,934.70/x
  3. Step 3: Cross multiply
    70,765.27x = 97,654.68 × 38,934.70
  4. Step 4: Simplify right side
    70,765.27x = 3,802,155,474.72
  5. Step 5: Solve for x
    x = 3,802,155,474.72/70,765.27
  6. Step 6: Final answer
    x = 53,729.12

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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.