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Finding the Fourth Proportional to 110,543.70, 152,429.85 and 74,671.44

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Solution

The fourth proportional to 110,543.70, 152,429.85 and 74,671.44 is: 102,965.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,543.70 : 152,429.85 = 74,671.44 : x
  2. Step 2: Convert to fraction form
    110,543.70/152,429.85 = 74,671.44/x
  3. Step 3: Cross multiply
    110,543.70x = 152,429.85 × 74,671.44
  4. Step 4: Simplify right side
    110,543.70x = 11,382,156,398.48
  5. Step 5: Solve for x
    x = 11,382,156,398.48/110,543.70
  6. Step 6: Final answer
    x = 102,965.22

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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.