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Finding the Fourth Proportional to 12,012.88, 16,593.78 and 9,663.88

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Solution

The fourth proportional to 12,012.88, 16,593.78 and 9,663.88 is: 13,349.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,012.88 : 16,593.78 = 9,663.88 : x
  2. Step 2: Convert to fraction form
    12,012.88/16,593.78 = 9,663.88/x
  3. Step 3: Cross multiply
    12,012.88x = 16,593.78 × 9,663.88
  4. Step 4: Simplify right side
    12,012.88x = 160,360,298.67
  5. Step 5: Solve for x
    x = 160,360,298.67/12,012.88
  6. Step 6: Final answer
    x = 13,349.03

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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.