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Finding the Fourth Proportional to 66,978.20, 92,434.53 and 44,277.82

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Solution

The fourth proportional to 66,978.20, 92,434.53 and 44,277.82 is: 61,106.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,978.20 : 92,434.53 = 44,277.82 : x
  2. Step 2: Convert to fraction form
    66,978.20/92,434.53 = 44,277.82/x
  3. Step 3: Cross multiply
    66,978.20x = 92,434.53 × 44,277.82
  4. Step 4: Simplify right side
    66,978.20x = 4,092,799,481.12
  5. Step 5: Solve for x
    x = 4,092,799,481.12/66,978.20
  6. Step 6: Final answer
    x = 61,106.44

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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.