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Finding the Fourth Proportional to 40,515.71, 60,731.86 and 15,549.11

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Solution

The fourth proportional to 40,515.71, 60,731.86 and 15,549.11 is: 23,307.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,515.71 : 60,731.86 = 15,549.11 : x
  2. Step 2: Convert to fraction form
    40,515.71/60,731.86 = 15,549.11/x
  3. Step 3: Cross multiply
    40,515.71x = 60,731.86 × 15,549.11
  4. Step 4: Simplify right side
    40,515.71x = 944,326,371.64
  5. Step 5: Solve for x
    x = 944,326,371.64/40,515.71
  6. Step 6: Final answer
    x = 23,307.66

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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.