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Finding the Fourth Proportional to 74,818.80, 112,092.12 and 43,559.28

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Solution

The fourth proportional to 74,818.80, 112,092.12 and 43,559.28 is: 65,259.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,818.80 : 112,092.12 = 43,559.28 : x
  2. Step 2: Convert to fraction form
    74,818.80/112,092.12 = 43,559.28/x
  3. Step 3: Cross multiply
    74,818.80x = 112,092.12 × 43,559.28
  4. Step 4: Simplify right side
    74,818.80x = 4,882,652,040.87
  5. Step 5: Solve for x
    x = 4,882,652,040.87/74,818.80
  6. Step 6: Final answer
    x = 65,259.69

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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.