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Finding the Fourth Proportional to 125,156.55, 187,716.60 and 36,400.80

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Solution

The fourth proportional to 125,156.55, 187,716.60 and 36,400.80 is: 54,595.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,156.55 : 187,716.60 = 36,400.80 : x
  2. Step 2: Convert to fraction form
    125,156.55/187,716.60 = 36,400.80/x
  3. Step 3: Cross multiply
    125,156.55x = 187,716.60 × 36,400.80
  4. Step 4: Simplify right side
    125,156.55x = 6,833,034,413.28
  5. Step 5: Solve for x
    x = 6,833,034,413.28/125,156.55
  6. Step 6: Final answer
    x = 54,595.90

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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.