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Finding the Fourth Proportional to 52,096.92, 78,148.98 and 20,932.20

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Solution

The fourth proportional to 52,096.92, 78,148.98 and 20,932.20 is: 31,399.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,096.92 : 78,148.98 = 20,932.20 : x
  2. Step 2: Convert to fraction form
    52,096.92/78,148.98 = 20,932.20/x
  3. Step 3: Cross multiply
    52,096.92x = 78,148.98 × 20,932.20
  4. Step 4: Simplify right side
    52,096.92x = 1,635,830,079.16
  5. Step 5: Solve for x
    x = 1,635,830,079.16/52,096.92
  6. Step 6: Final answer
    x = 31,399.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.