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Finding the Fourth Proportional to 125,702.64, 188,299.20 and 58,138.80

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Solution

The fourth proportional to 125,702.64, 188,299.20 and 58,138.80 is: 87,090.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,702.64 : 188,299.20 = 58,138.80 : x
  2. Step 2: Convert to fraction form
    125,702.64/188,299.20 = 58,138.80/x
  3. Step 3: Cross multiply
    125,702.64x = 188,299.20 × 58,138.80
  4. Step 4: Simplify right side
    125,702.64x = 10,947,489,528.96
  5. Step 5: Solve for x
    x = 10,947,489,528.96/125,702.64
  6. Step 6: Final answer
    x = 87,090.37

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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.