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Finding the Fourth Proportional to 86,860.78, 119,862.33 and 48,613.88

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Solution

The fourth proportional to 86,860.78, 119,862.33 and 48,613.88 is: 67,084.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,860.78 : 119,862.33 = 48,613.88 : x
  2. Step 2: Convert to fraction form
    86,860.78/119,862.33 = 48,613.88/x
  3. Step 3: Cross multiply
    86,860.78x = 119,862.33 × 48,613.88
  4. Step 4: Simplify right side
    86,860.78x = 5,826,972,684.07
  5. Step 5: Solve for x
    x = 5,826,972,684.07/86,860.78
  6. Step 6: Final answer
    x = 67,084.05

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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.