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Finding the Fourth Proportional to 124,887.92, 187,334.21 and 40,647.80

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Solution

The fourth proportional to 124,887.92, 187,334.21 and 40,647.80 is: 60,972.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,887.92 : 187,334.21 = 40,647.80 : x
  2. Step 2: Convert to fraction form
    124,887.92/187,334.21 = 40,647.80/x
  3. Step 3: Cross multiply
    124,887.92x = 187,334.21 × 40,647.80
  4. Step 4: Simplify right side
    124,887.92x = 7,614,724,071.19
  5. Step 5: Solve for x
    x = 7,614,724,071.19/124,887.92
  6. Step 6: Final answer
    x = 60,972.47

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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.