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Finding the Fourth Proportional to 71,864.81, 99,164.22 and 41,649.92

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Solution

The fourth proportional to 71,864.81, 99,164.22 and 41,649.92 is: 57,471.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,864.81 : 99,164.22 = 41,649.92 : x
  2. Step 2: Convert to fraction form
    71,864.81/99,164.22 = 41,649.92/x
  3. Step 3: Cross multiply
    71,864.81x = 99,164.22 × 41,649.92
  4. Step 4: Simplify right side
    71,864.81x = 4,130,181,829.86
  5. Step 5: Solve for x
    x = 4,130,181,829.86/71,864.81
  6. Step 6: Final answer
    x = 57,471.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.