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Finding the Fourth Proportional to 60,833.72, 91,259.25 and 18,717.30

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Solution

The fourth proportional to 60,833.72, 91,259.25 and 18,717.30 is: 28,078.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,833.72 : 91,259.25 = 18,717.30 : x
  2. Step 2: Convert to fraction form
    60,833.72/91,259.25 = 18,717.30/x
  3. Step 3: Cross multiply
    60,833.72x = 91,259.25 × 18,717.30
  4. Step 4: Simplify right side
    60,833.72x = 1,708,126,760.03
  5. Step 5: Solve for x
    x = 1,708,126,760.03/60,833.72
  6. Step 6: Final answer
    x = 28,078.62

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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.