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Finding the Fourth Proportional to 89,625.92, 123,672.48 and 51,899.84

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Solution

The fourth proportional to 89,625.92, 123,672.48 and 51,899.84 is: 71,615.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,625.92 : 123,672.48 = 51,899.84 : x
  2. Step 2: Convert to fraction form
    89,625.92/123,672.48 = 51,899.84/x
  3. Step 3: Cross multiply
    89,625.92x = 123,672.48 × 51,899.84
  4. Step 4: Simplify right side
    89,625.92x = 6,418,581,924.40
  5. Step 5: Solve for x
    x = 6,418,581,924.40/89,625.92
  6. Step 6: Final answer
    x = 71,615.24

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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.