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Finding the Fourth Proportional to 73,957.20, 110,928.48 and 40,666.20

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Solution

The fourth proportional to 73,957.20, 110,928.48 and 40,666.20 is: 60,995.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,957.20 : 110,928.48 = 40,666.20 : x
  2. Step 2: Convert to fraction form
    73,957.20/110,928.48 = 40,666.20/x
  3. Step 3: Cross multiply
    73,957.20x = 110,928.48 × 40,666.20
  4. Step 4: Simplify right side
    73,957.20x = 4,511,039,753.38
  5. Step 5: Solve for x
    x = 4,511,039,753.38/73,957.20
  6. Step 6: Final answer
    x = 60,995.28

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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.