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Finding the Fourth Proportional to 53,920.77, 80,897.22 and 38,961.69

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Solution

The fourth proportional to 53,920.77, 80,897.22 and 38,961.69 is: 58,454.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,920.77 : 80,897.22 = 38,961.69 : x
  2. Step 2: Convert to fraction form
    53,920.77/80,897.22 = 38,961.69/x
  3. Step 3: Cross multiply
    53,920.77x = 80,897.22 × 38,961.69
  4. Step 4: Simplify right side
    53,920.77x = 3,151,892,407.50
  5. Step 5: Solve for x
    x = 3,151,892,407.50/53,920.77
  6. Step 6: Final answer
    x = 58,454.14

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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.