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Finding the Fourth Proportional to 125,688.76, 188,540.12 and 41,445.52

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Solution

The fourth proportional to 125,688.76, 188,540.12 and 41,445.52 is: 62,170.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,688.76 : 188,540.12 = 41,445.52 : x
  2. Step 2: Convert to fraction form
    125,688.76/188,540.12 = 41,445.52/x
  3. Step 3: Cross multiply
    125,688.76x = 188,540.12 × 41,445.52
  4. Step 4: Simplify right side
    125,688.76x = 7,814,143,314.26
  5. Step 5: Solve for x
    x = 7,814,143,314.26/125,688.76
  6. Step 6: Final answer
    x = 62,170.58

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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.