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Finding the Fourth Proportional to 91,706.47, 137,599.31 and 49,616.21

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Solution

The fourth proportional to 91,706.47, 137,599.31 and 49,616.21 is: 74,445.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,706.47 : 137,599.31 = 49,616.21 : x
  2. Step 2: Convert to fraction form
    91,706.47/137,599.31 = 49,616.21/x
  3. Step 3: Cross multiply
    91,706.47x = 137,599.31 × 49,616.21
  4. Step 4: Simplify right side
    91,706.47x = 6,827,156,012.73
  5. Step 5: Solve for x
    x = 6,827,156,012.73/91,706.47
  6. Step 6: Final answer
    x = 74,445.74

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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.