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Finding the Fourth Proportional to 70,685.97, 97,546.07 and 38,854.53

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Solution

The fourth proportional to 70,685.97, 97,546.07 and 38,854.53 is: 53,618.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,685.97 : 97,546.07 = 38,854.53 : x
  2. Step 2: Convert to fraction form
    70,685.97/97,546.07 = 38,854.53/x
  3. Step 3: Cross multiply
    70,685.97x = 97,546.07 × 38,854.53
  4. Step 4: Simplify right side
    70,685.97x = 3,790,106,508.92
  5. Step 5: Solve for x
    x = 3,790,106,508.92/70,685.97
  6. Step 6: Final answer
    x = 53,618.94

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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.