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Finding the Fourth Proportional to 135,370.85, 186,805.71 and 74,937.24

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Solution

The fourth proportional to 135,370.85, 186,805.71 and 74,937.24 is: 103,410.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,370.85 : 186,805.71 = 74,937.24 : x
  2. Step 2: Convert to fraction form
    135,370.85/186,805.71 = 74,937.24/x
  3. Step 3: Cross multiply
    135,370.85x = 186,805.71 × 74,937.24
  4. Step 4: Simplify right side
    135,370.85x = 13,998,704,323.64
  5. Step 5: Solve for x
    x = 13,998,704,323.64/135,370.85
  6. Step 6: Final answer
    x = 103,410.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.