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Finding the Fourth Proportional to 12,349.76, 17,042.78 and 7,044.85

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Solution

The fourth proportional to 12,349.76, 17,042.78 and 7,044.85 is: 9,721.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,349.76 : 17,042.78 = 7,044.85 : x
  2. Step 2: Convert to fraction form
    12,349.76/17,042.78 = 7,044.85/x
  3. Step 3: Cross multiply
    12,349.76x = 17,042.78 × 7,044.85
  4. Step 4: Simplify right side
    12,349.76x = 120,063,708.24
  5. Step 5: Solve for x
    x = 120,063,708.24/12,349.76
  6. Step 6: Final answer
    x = 9,721.95

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1.5x scale

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.