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Finding the Fourth Proportional to 74,298.63, 111,251.10 and 39,164.48

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Solution

The fourth proportional to 74,298.63, 111,251.10 and 39,164.48 is: 58,642.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,298.63 : 111,251.10 = 39,164.48 : x
  2. Step 2: Convert to fraction form
    74,298.63/111,251.10 = 39,164.48/x
  3. Step 3: Cross multiply
    74,298.63x = 111,251.10 × 39,164.48
  4. Step 4: Simplify right side
    74,298.63x = 4,357,091,488.73
  5. Step 5: Solve for x
    x = 4,357,091,488.73/74,298.63
  6. Step 6: Final answer
    x = 58,642.96

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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.