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Finding the Fourth Proportional to 74,142.60, 111,101.67 and 49,092.95

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Solution

The fourth proportional to 74,142.60, 111,101.67 and 49,092.95 is: 73,565.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,142.60 : 111,101.67 = 49,092.95 : x
  2. Step 2: Convert to fraction form
    74,142.60/111,101.67 = 49,092.95/x
  3. Step 3: Cross multiply
    74,142.60x = 111,101.67 × 49,092.95
  4. Step 4: Simplify right side
    74,142.60x = 5,454,308,174.72
  5. Step 5: Solve for x
    x = 5,454,308,174.72/74,142.60
  6. Step 6: Final answer
    x = 73,565.11

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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.