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Finding the Fourth Proportional to 70,758.76, 97,645.50 and 38,926.96

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Solution

The fourth proportional to 70,758.76, 97,645.50 and 38,926.96 is: 53,718.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,758.76 : 97,645.50 = 38,926.96 : x
  2. Step 2: Convert to fraction form
    70,758.76/97,645.50 = 38,926.96/x
  3. Step 3: Cross multiply
    70,758.76x = 97,645.50 × 38,926.96
  4. Step 4: Simplify right side
    70,758.76x = 3,801,042,472.68
  5. Step 5: Solve for x
    x = 3,801,042,472.68/70,758.76
  6. Step 6: Final answer
    x = 53,718.33

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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.