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Finding the Fourth Proportional to 18,346.57, 25,318.25 and 9,963.01

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Solution

The fourth proportional to 18,346.57, 25,318.25 and 9,963.01 is: 13,748.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,346.57 : 25,318.25 = 9,963.01 : x
  2. Step 2: Convert to fraction form
    18,346.57/25,318.25 = 9,963.01/x
  3. Step 3: Cross multiply
    18,346.57x = 25,318.25 × 9,963.01
  4. Step 4: Simplify right side
    18,346.57x = 252,245,928.12
  5. Step 5: Solve for x
    x = 252,245,928.12/18,346.57
  6. Step 6: Final answer
    x = 13,748.94

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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.