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Finding the Fourth Proportional to 125,347.65, 188,078.89 and 54,292.02

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Solution

The fourth proportional to 125,347.65, 188,078.89 and 54,292.02 is: 81,462.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,347.65 : 188,078.89 = 54,292.02 : x
  2. Step 2: Convert to fraction form
    125,347.65/188,078.89 = 54,292.02/x
  3. Step 3: Cross multiply
    125,347.65x = 188,078.89 × 54,292.02
  4. Step 4: Simplify right side
    125,347.65x = 10,211,182,857.46
  5. Step 5: Solve for x
    x = 10,211,182,857.46/125,347.65
  6. Step 6: Final answer
    x = 81,462.90

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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.