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Finding the Fourth Proportional to 125,947.80, 188,921.70 and 124,635.60

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Solution

The fourth proportional to 125,947.80, 188,921.70 and 124,635.60 is: 186,953.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,947.80 : 188,921.70 = 124,635.60 : x
  2. Step 2: Convert to fraction form
    125,947.80/188,921.70 = 124,635.60/x
  3. Step 3: Cross multiply
    125,947.80x = 188,921.70 × 124,635.60
  4. Step 4: Simplify right side
    125,947.80x = 23,546,369,432.52
  5. Step 5: Solve for x
    x = 23,546,369,432.52/125,947.80
  6. Step 6: Final answer
    x = 186,953.40

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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.