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Finding the Fourth Proportional to 71,885.98, 99,203.06 and 41,689.22

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Solution

The fourth proportional to 71,885.98, 99,203.06 and 41,689.22 is: 57,531.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,885.98 : 99,203.06 = 41,689.22 : x
  2. Step 2: Convert to fraction form
    71,885.98/99,203.06 = 41,689.22/x
  3. Step 3: Cross multiply
    71,885.98x = 99,203.06 × 41,689.22
  4. Step 4: Simplify right side
    71,885.98x = 4,135,697,801.22
  5. Step 5: Solve for x
    x = 4,135,697,801.22/71,885.98
  6. Step 6: Final answer
    x = 57,531.35

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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.