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Finding the Fourth Proportional to 18,630.56, 25,710.24 and 10,132.68

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Solution

The fourth proportional to 18,630.56, 25,710.24 and 10,132.68 is: 13,983.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,630.56 : 25,710.24 = 10,132.68 : x
  2. Step 2: Convert to fraction form
    18,630.56/25,710.24 = 10,132.68/x
  3. Step 3: Cross multiply
    18,630.56x = 25,710.24 × 10,132.68
  4. Step 4: Simplify right side
    18,630.56x = 260,513,769.05
  5. Step 5: Solve for x
    x = 260,513,769.05/18,630.56
  6. Step 6: Final answer
    x = 13,983.14

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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.