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Finding the Fourth Proportional to 119,978.62, 165,602.52 and 68,996.92

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Solution

The fourth proportional to 119,978.62, 165,602.52 and 68,996.92 is: 95,234.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,978.62 : 165,602.52 = 68,996.92 : x
  2. Step 2: Convert to fraction form
    119,978.62/165,602.52 = 68,996.92/x
  3. Step 3: Cross multiply
    119,978.62x = 165,602.52 × 68,996.92
  4. Step 4: Simplify right side
    119,978.62x = 11,426,063,824.24
  5. Step 5: Solve for x
    x = 11,426,063,824.24/119,978.62
  6. Step 6: Final answer
    x = 95,234.17

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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.