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Finding the Fourth Proportional to 18,667.56, 25,752.90 and 10,708.20

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Solution

The fourth proportional to 18,667.56, 25,752.90 and 10,708.20 is: 14,772.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,667.56 : 25,752.90 = 10,708.20 : x
  2. Step 2: Convert to fraction form
    18,667.56/25,752.90 = 10,708.20/x
  3. Step 3: Cross multiply
    18,667.56x = 25,752.90 × 10,708.20
  4. Step 4: Simplify right side
    18,667.56x = 275,767,203.78
  5. Step 5: Solve for x
    x = 275,767,203.78/18,667.56
  6. Step 6: Final answer
    x = 14,772.54

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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.