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Finding the Fourth Proportional to 86,590.65, 119,497.13 and 48,348.90

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Solution

The fourth proportional to 86,590.65, 119,497.13 and 48,348.90 is: 66,722.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,590.65 : 119,497.13 = 48,348.90 : x
  2. Step 2: Convert to fraction form
    86,590.65/119,497.13 = 48,348.90/x
  3. Step 3: Cross multiply
    86,590.65x = 119,497.13 × 48,348.90
  4. Step 4: Simplify right side
    86,590.65x = 5,777,554,546.91
  5. Step 5: Solve for x
    x = 5,777,554,546.91/86,590.65
  6. Step 6: Final answer
    x = 66,722.61

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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.