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Finding the Fourth Proportional to 70,757.28, 97,644.28 and 38,926.20

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Solution

The fourth proportional to 70,757.28, 97,644.28 and 38,926.20 is: 53,717.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,757.28 : 97,644.28 = 38,926.20 : x
  2. Step 2: Convert to fraction form
    70,757.28/97,644.28 = 38,926.20/x
  3. Step 3: Cross multiply
    70,757.28x = 97,644.28 × 38,926.20
  4. Step 4: Simplify right side
    70,757.28x = 3,800,920,772.14
  5. Step 5: Solve for x
    x = 3,800,920,772.14/70,757.28
  6. Step 6: Final answer
    x = 53,717.73

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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.