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Finding the Fourth Proportional to 79,780.62, 119,689.35 and 26,468.62

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Solution

The fourth proportional to 79,780.62, 119,689.35 and 26,468.62 is: 39,709.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,780.62 : 119,689.35 = 26,468.62 : x
  2. Step 2: Convert to fraction form
    79,780.62/119,689.35 = 26,468.62/x
  3. Step 3: Cross multiply
    79,780.62x = 119,689.35 × 26,468.62
  4. Step 4: Simplify right side
    79,780.62x = 3,168,012,197.97
  5. Step 5: Solve for x
    x = 3,168,012,197.97/79,780.62
  6. Step 6: Final answer
    x = 39,709.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.