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Finding the Fourth Proportional to 125,591.64, 188,395.56 and 55,470.75

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Solution

The fourth proportional to 125,591.64, 188,395.56 and 55,470.75 is: 83,209.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,591.64 : 188,395.56 = 55,470.75 : x
  2. Step 2: Convert to fraction form
    125,591.64/188,395.56 = 55,470.75/x
  3. Step 3: Cross multiply
    125,591.64x = 188,395.56 × 55,470.75
  4. Step 4: Simplify right side
    125,591.64x = 10,450,443,009.87
  5. Step 5: Solve for x
    x = 10,450,443,009.87/125,591.64
  6. Step 6: Final answer
    x = 83,209.70

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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.