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Finding the Fourth Proportional to 125,786.60, 188,426.62 and 58,223.40

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Solution

The fourth proportional to 125,786.60, 188,426.62 and 58,223.40 is: 87,217.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,786.60 : 188,426.62 = 58,223.40 : x
  2. Step 2: Convert to fraction form
    125,786.60/188,426.62 = 58,223.40/x
  3. Step 3: Cross multiply
    125,786.60x = 188,426.62 × 58,223.40
  4. Step 4: Simplify right side
    125,786.60x = 10,970,838,466.91
  5. Step 5: Solve for x
    x = 10,970,838,466.91/125,786.60
  6. Step 6: Final answer
    x = 87,217.86

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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.