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Finding the Fourth Proportional to 120,641.77, 180,974.96 and 41,755.77

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Solution

The fourth proportional to 120,641.77, 180,974.96 and 41,755.77 is: 62,637.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,641.77 : 180,974.96 = 41,755.77 : x
  2. Step 2: Convert to fraction form
    120,641.77/180,974.96 = 41,755.77/x
  3. Step 3: Cross multiply
    120,641.77x = 180,974.96 × 41,755.77
  4. Step 4: Simplify right side
    120,641.77x = 7,556,748,596.74
  5. Step 5: Solve for x
    x = 7,556,748,596.74/120,641.77
  6. Step 6: Final answer
    x = 62,637.91

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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.