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Finding the Fourth Proportional to 119,614.68, 165,061.89 and 68,616.90

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Solution

The fourth proportional to 119,614.68, 165,061.89 and 68,616.90 is: 94,687.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,614.68 : 165,061.89 = 68,616.90 : x
  2. Step 2: Convert to fraction form
    119,614.68/165,061.89 = 68,616.90/x
  3. Step 3: Cross multiply
    119,614.68x = 165,061.89 × 68,616.90
  4. Step 4: Simplify right side
    119,614.68x = 11,326,035,199.94
  5. Step 5: Solve for x
    x = 11,326,035,199.94/119,614.68
  6. Step 6: Final answer
    x = 94,687.67

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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.