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Finding the Fourth Proportional to 71,386.94, 106,861.62 and 63,892.82

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Solution

The fourth proportional to 71,386.94, 106,861.62 and 63,892.82 is: 95,643.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,386.94 : 106,861.62 = 63,892.82 : x
  2. Step 2: Convert to fraction form
    71,386.94/106,861.62 = 63,892.82/x
  3. Step 3: Cross multiply
    71,386.94x = 106,861.62 × 63,892.82
  4. Step 4: Simplify right side
    71,386.94x = 6,827,690,251.57
  5. Step 5: Solve for x
    x = 6,827,690,251.57/71,386.94
  6. Step 6: Final answer
    x = 95,643.41

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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.