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Finding the Fourth Proportional to 55,344.87, 83,073.80 and 40,509.72

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Solution

The fourth proportional to 55,344.87, 83,073.80 and 40,509.72 is: 60,805.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,344.87 : 83,073.80 = 40,509.72 : x
  2. Step 2: Convert to fraction form
    55,344.87/83,073.80 = 40,509.72/x
  3. Step 3: Cross multiply
    55,344.87x = 83,073.80 × 40,509.72
  4. Step 4: Simplify right side
    55,344.87x = 3,365,296,478.61
  5. Step 5: Solve for x
    x = 3,365,296,478.61/55,344.87
  6. Step 6: Final answer
    x = 60,805.93

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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.