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Finding the Fourth Proportional to 101,778.88, 140,454.98 and 59,345.61

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Solution

The fourth proportional to 101,778.88, 140,454.98 and 59,345.61 is: 81,897.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,778.88 : 140,454.98 = 59,345.61 : x
  2. Step 2: Convert to fraction form
    101,778.88/140,454.98 = 59,345.61/x
  3. Step 3: Cross multiply
    101,778.88x = 140,454.98 × 59,345.61
  4. Step 4: Simplify right side
    101,778.88x = 8,335,386,465.64
  5. Step 5: Solve for x
    x = 8,335,386,465.64/101,778.88
  6. Step 6: Final answer
    x = 81,897.02

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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.