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Finding the Fourth Proportional to 108,453.60, 162,468.54 and 74,713.65

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Solution

The fourth proportional to 108,453.60, 162,468.54 and 74,713.65 is: 111,924.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,453.60 : 162,468.54 = 74,713.65 : x
  2. Step 2: Convert to fraction form
    108,453.60/162,468.54 = 74,713.65/x
  3. Step 3: Cross multiply
    108,453.60x = 162,468.54 × 74,713.65
  4. Step 4: Simplify right side
    108,453.60x = 12,138,617,633.57
  5. Step 5: Solve for x
    x = 12,138,617,633.57/108,453.60
  6. Step 6: Final answer
    x = 111,924.52

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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.