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Finding the Fourth Proportional to 74,290.98, 111,454.92 and 36,868.62

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Solution

The fourth proportional to 74,290.98, 111,454.92 and 36,868.62 is: 55,312.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,290.98 : 111,454.92 = 36,868.62 : x
  2. Step 2: Convert to fraction form
    74,290.98/111,454.92 = 36,868.62/x
  3. Step 3: Cross multiply
    74,290.98x = 111,454.92 × 36,868.62
  4. Step 4: Simplify right side
    74,290.98x = 4,109,189,092.61
  5. Step 5: Solve for x
    x = 4,109,189,092.61/74,290.98
  6. Step 6: Final answer
    x = 55,312.09

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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.