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Finding the Fourth Proportional to 72,363.43, 108,358.21 and 49,943.31

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Solution

The fourth proportional to 72,363.43, 108,358.21 and 49,943.31 is: 74,785.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,363.43 : 108,358.21 = 49,943.31 : x
  2. Step 2: Convert to fraction form
    72,363.43/108,358.21 = 49,943.31/x
  3. Step 3: Cross multiply
    72,363.43x = 108,358.21 × 49,943.31
  4. Step 4: Simplify right side
    72,363.43x = 5,411,767,673.08
  5. Step 5: Solve for x
    x = 5,411,767,673.08/72,363.43
  6. Step 6: Final answer
    x = 74,785.95

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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.