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Finding the Fourth Proportional to 12,472.68, 17,212.20 and 6,883.68

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Solution

The fourth proportional to 12,472.68, 17,212.20 and 6,883.68 is: 9,499.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,472.68 : 17,212.20 = 6,883.68 : x
  2. Step 2: Convert to fraction form
    12,472.68/17,212.20 = 6,883.68/x
  3. Step 3: Cross multiply
    12,472.68x = 17,212.20 × 6,883.68
  4. Step 4: Simplify right side
    12,472.68x = 118,483,276.90
  5. Step 5: Solve for x
    x = 118,483,276.90/12,472.68
  6. Step 6: Final answer
    x = 9,499.42

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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.