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Finding the Fourth Proportional to 75,422.91, 104,080.25 and 45,224.90

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Solution

The fourth proportional to 75,422.91, 104,080.25 and 45,224.90 is: 62,408.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,422.91 : 104,080.25 = 45,224.90 : x
  2. Step 2: Convert to fraction form
    75,422.91/104,080.25 = 45,224.90/x
  3. Step 3: Cross multiply
    75,422.91x = 104,080.25 × 45,224.90
  4. Step 4: Simplify right side
    75,422.91x = 4,707,018,151.70
  5. Step 5: Solve for x
    x = 4,707,018,151.70/75,422.91
  6. Step 6: Final answer
    x = 62,408.33

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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.