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Finding the Fourth Proportional to 18,052.81, 24,920.45 and 10,981.69

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Solution

The fourth proportional to 18,052.81, 24,920.45 and 10,981.69 is: 15,159.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,052.81 : 24,920.45 = 10,981.69 : x
  2. Step 2: Convert to fraction form
    18,052.81/24,920.45 = 10,981.69/x
  3. Step 3: Cross multiply
    18,052.81x = 24,920.45 × 10,981.69
  4. Step 4: Simplify right side
    18,052.81x = 273,668,656.56
  5. Step 5: Solve for x
    x = 273,668,656.56/18,052.81
  6. Step 6: Final answer
    x = 15,159.34

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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.