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Finding the Fourth Proportional to 74,792.43, 112,188.92 and 18,632.48

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Solution

The fourth proportional to 74,792.43, 112,188.92 and 18,632.48 is: 27,948.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,792.43 : 112,188.92 = 18,632.48 : x
  2. Step 2: Convert to fraction form
    74,792.43/112,188.92 = 18,632.48/x
  3. Step 3: Cross multiply
    74,792.43x = 112,188.92 × 18,632.48
  4. Step 4: Simplify right side
    74,792.43x = 2,090,357,154.01
  5. Step 5: Solve for x
    x = 2,090,357,154.01/74,792.43
  6. Step 6: Final answer
    x = 27,948.78

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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.