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Finding the Fourth Proportional to 67,291.78, 92,862.63 and 39,013.84

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Solution

The fourth proportional to 67,291.78, 92,862.63 and 39,013.84 is: 53,839.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,291.78 : 92,862.63 = 39,013.84 : x
  2. Step 2: Convert to fraction form
    67,291.78/92,862.63 = 39,013.84/x
  3. Step 3: Cross multiply
    67,291.78x = 92,862.63 × 39,013.84
  4. Step 4: Simplify right side
    67,291.78x = 3,622,927,788.80
  5. Step 5: Solve for x
    x = 3,622,927,788.80/67,291.78
  6. Step 6: Final answer
    x = 53,839.08

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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.