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Finding the Fourth Proportional to 18,346.63, 25,318.35 and 9,963.13

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Solution

The fourth proportional to 18,346.63, 25,318.35 and 9,963.13 is: 13,749.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,346.63 : 25,318.35 = 9,963.13 : x
  2. Step 2: Convert to fraction form
    18,346.63/25,318.35 = 9,963.13/x
  3. Step 3: Cross multiply
    18,346.63x = 25,318.35 × 9,963.13
  4. Step 4: Simplify right side
    18,346.63x = 252,250,012.44
  5. Step 5: Solve for x
    x = 252,250,012.44/18,346.63
  6. Step 6: Final answer
    x = 13,749.12

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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.