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Finding the Fourth Proportional to 59,781.88, 89,671.86 and 20,366.44

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Solution

The fourth proportional to 59,781.88, 89,671.86 and 20,366.44 is: 30,549.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,781.88 : 89,671.86 = 20,366.44 : x
  2. Step 2: Convert to fraction form
    59,781.88/89,671.86 = 20,366.44/x
  3. Step 3: Cross multiply
    59,781.88x = 89,671.86 × 20,366.44
  4. Step 4: Simplify right side
    59,781.88x = 1,826,296,556.38
  5. Step 5: Solve for x
    x = 1,826,296,556.38/59,781.88
  6. Step 6: Final answer
    x = 30,549.33

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1.5x scale

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.