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Finding the Fourth Proportional to 60,459.81, 90,726.17 and 21,044.61

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Solution

The fourth proportional to 60,459.81, 90,726.17 and 21,044.61 is: 31,579.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,459.81 : 90,726.17 = 21,044.61 : x
  2. Step 2: Convert to fraction form
    60,459.81/90,726.17 = 21,044.61/x
  3. Step 3: Cross multiply
    60,459.81x = 90,726.17 × 21,044.61
  4. Step 4: Simplify right side
    60,459.81x = 1,909,296,759.22
  5. Step 5: Solve for x
    x = 1,909,296,759.22/60,459.81
  6. Step 6: Final answer
    x = 31,579.60

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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.