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Finding the Fourth Proportional to 73,869.70, 110,732.55 and 42,247.30

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Solution

The fourth proportional to 73,869.70, 110,732.55 and 42,247.30 is: 63,329.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,869.70 : 110,732.55 = 42,247.30 : x
  2. Step 2: Convert to fraction form
    73,869.70/110,732.55 = 42,247.30/x
  3. Step 3: Cross multiply
    73,869.70x = 110,732.55 × 42,247.30
  4. Step 4: Simplify right side
    73,869.70x = 4,678,151,259.62
  5. Step 5: Solve for x
    x = 4,678,151,259.62/73,869.70
  6. Step 6: Final answer
    x = 63,329.77

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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.