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Finding the Fourth Proportional to 60,793.92, 91,172.88 and 21,343.68

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Solution

The fourth proportional to 60,793.92, 91,172.88 and 21,343.68 is: 32,009.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,793.92 : 91,172.88 = 21,343.68 : x
  2. Step 2: Convert to fraction form
    60,793.92/91,172.88 = 21,343.68/x
  3. Step 3: Cross multiply
    60,793.92x = 91,172.88 × 21,343.68
  4. Step 4: Simplify right side
    60,793.92x = 1,945,964,775.40
  5. Step 5: Solve for x
    x = 1,945,964,775.40/60,793.92
  6. Step 6: Final answer
    x = 32,009.20

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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.