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Finding the Fourth Proportional to 61,985.97, 92,978.82 and 17,613.18

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Solution

The fourth proportional to 61,985.97, 92,978.82 and 17,613.18 is: 26,419.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,985.97 : 92,978.82 = 17,613.18 : x
  2. Step 2: Convert to fraction form
    61,985.97/92,978.82 = 17,613.18/x
  3. Step 3: Cross multiply
    61,985.97x = 92,978.82 × 17,613.18
  4. Step 4: Simplify right side
    61,985.97x = 1,637,652,692.85
  5. Step 5: Solve for x
    x = 1,637,652,692.85/61,985.97
  6. Step 6: Final answer
    x = 26,419.73

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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.