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Finding the Fourth Proportional to 86,799.90, 119,794.88 and 48,561.58

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Solution

The fourth proportional to 86,799.90, 119,794.88 and 48,561.58 is: 67,021.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,799.90 : 119,794.88 = 48,561.58 : x
  2. Step 2: Convert to fraction form
    86,799.90/119,794.88 = 48,561.58/x
  3. Step 3: Cross multiply
    86,799.90x = 119,794.88 × 48,561.58
  4. Step 4: Simplify right side
    86,799.90x = 5,817,428,648.71
  5. Step 5: Solve for x
    x = 5,817,428,648.71/86,799.90
  6. Step 6: Final answer
    x = 67,021.14

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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.