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Finding the Fourth Proportional to 12,672.30, 17,486.24 and 7,006.66

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Solution

The fourth proportional to 12,672.30, 17,486.24 and 7,006.66 is: 9,668.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,672.30 : 17,486.24 = 7,006.66 : x
  2. Step 2: Convert to fraction form
    12,672.30/17,486.24 = 7,006.66/x
  3. Step 3: Cross multiply
    12,672.30x = 17,486.24 × 7,006.66
  4. Step 4: Simplify right side
    12,672.30x = 122,520,138.36
  5. Step 5: Solve for x
    x = 122,520,138.36/12,672.30
  6. Step 6: Final answer
    x = 9,668.34

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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.