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Finding the Fourth Proportional to 86,805.66, 119,789.82 and 48,565.74

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Solution

The fourth proportional to 86,805.66, 119,789.82 and 48,565.74 is: 67,019.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,805.66 : 119,789.82 = 48,565.74 : x
  2. Step 2: Convert to fraction form
    86,805.66/119,789.82 = 48,565.74/x
  3. Step 3: Cross multiply
    86,805.66x = 119,789.82 × 48,565.74
  4. Step 4: Simplify right side
    86,805.66x = 5,817,681,252.77
  5. Step 5: Solve for x
    x = 5,817,681,252.77/86,805.66
  6. Step 6: Final answer
    x = 67,019.61

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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.