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Finding the Fourth Proportional to 18,031.45, 24,883.83 and 9,965.11

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Solution

The fourth proportional to 18,031.45, 24,883.83 and 9,965.11 is: 13,752.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,031.45 : 24,883.83 = 9,965.11 : x
  2. Step 2: Convert to fraction form
    18,031.45/24,883.83 = 9,965.11/x
  3. Step 3: Cross multiply
    18,031.45x = 24,883.83 × 9,965.11
  4. Step 4: Simplify right side
    18,031.45x = 247,970,103.17
  5. Step 5: Solve for x
    x = 247,970,103.17/18,031.45
  6. Step 6: Final answer
    x = 13,752.09

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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.