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Finding the Fourth Proportional to 269,212.70, 403,746.15 and 79,672.70

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Solution

The fourth proportional to 269,212.70, 403,746.15 and 79,672.70 is: 119,487.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,212.70 : 403,746.15 = 79,672.70 : x
  2. Step 2: Convert to fraction form
    269,212.70/403,746.15 = 79,672.70/x
  3. Step 3: Cross multiply
    269,212.70x = 403,746.15 × 79,672.70
  4. Step 4: Simplify right side
    269,212.70x = 32,167,545,885.11
  5. Step 5: Solve for x
    x = 32,167,545,885.11/269,212.70
  6. Step 6: Final answer
    x = 119,487.48

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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.