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Finding the Fourth Proportional to 138,049.80, 206,953.20 and 93,532.20

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Solution

The fourth proportional to 138,049.80, 206,953.20 and 93,532.20 is: 140,215.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,049.80 : 206,953.20 = 93,532.20 : x
  2. Step 2: Convert to fraction form
    138,049.80/206,953.20 = 93,532.20/x
  3. Step 3: Cross multiply
    138,049.80x = 206,953.20 × 93,532.20
  4. Step 4: Simplify right side
    138,049.80x = 19,356,788,093.04
  5. Step 5: Solve for x
    x = 19,356,788,093.04/138,049.80
  6. Step 6: Final answer
    x = 140,215.98

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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.