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Finding the Fourth Proportional to 119,867.65, 165,421.64 and 68,881.69

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Solution

The fourth proportional to 119,867.65, 165,421.64 and 68,881.69 is: 95,059.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,867.65 : 165,421.64 = 68,881.69 : x
  2. Step 2: Convert to fraction form
    119,867.65/165,421.64 = 68,881.69/x
  3. Step 3: Cross multiply
    119,867.65x = 165,421.64 × 68,881.69
  4. Step 4: Simplify right side
    119,867.65x = 11,394,522,504.75
  5. Step 5: Solve for x
    x = 11,394,522,504.75/119,867.65
  6. Step 6: Final answer
    x = 95,059.20

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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.