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Finding the Fourth Proportional to 124,791.60, 187,041.60 and 65,596.80

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Solution

The fourth proportional to 124,791.60, 187,041.60 and 65,596.80 is: 98,318.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,791.60 : 187,041.60 = 65,596.80 : x
  2. Step 2: Convert to fraction form
    124,791.60/187,041.60 = 65,596.80/x
  3. Step 3: Cross multiply
    124,791.60x = 187,041.60 × 65,596.80
  4. Step 4: Simplify right side
    124,791.60x = 12,269,330,426.88
  5. Step 5: Solve for x
    x = 12,269,330,426.88/124,791.60
  6. Step 6: Final answer
    x = 98,318.56

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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.