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Finding the Fourth Proportional to 70,732.72, 97,611.97 and 38,902.15

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Solution

The fourth proportional to 70,732.72, 97,611.97 and 38,902.15 is: 53,685.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,732.72 : 97,611.97 = 38,902.15 : x
  2. Step 2: Convert to fraction form
    70,732.72/97,611.97 = 38,902.15/x
  3. Step 3: Cross multiply
    70,732.72x = 97,611.97 × 38,902.15
  4. Step 4: Simplify right side
    70,732.72x = 3,797,315,596.44
  5. Step 5: Solve for x
    x = 3,797,315,596.44/70,732.72
  6. Step 6: Final answer
    x = 53,685.42

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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.