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Finding the Fourth Proportional to 18,348.32, 25,320.84 and 9,964.84

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Solution

The fourth proportional to 18,348.32, 25,320.84 and 9,964.84 is: 13,751.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,348.32 : 25,320.84 = 9,964.84 : x
  2. Step 2: Convert to fraction form
    18,348.32/25,320.84 = 9,964.84/x
  3. Step 3: Cross multiply
    18,348.32x = 25,320.84 × 9,964.84
  4. Step 4: Simplify right side
    18,348.32x = 252,318,119.27
  5. Step 5: Solve for x
    x = 252,318,119.27/18,348.32
  6. Step 6: Final answer
    x = 13,751.57

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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.