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Finding the Fourth Proportional to 18,848.88, 25,993.28 and 12,472.56

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Solution

The fourth proportional to 18,848.88, 25,993.28 and 12,472.56 is: 17,200.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,848.88 : 25,993.28 = 12,472.56 : x
  2. Step 2: Convert to fraction form
    18,848.88/25,993.28 = 12,472.56/x
  3. Step 3: Cross multiply
    18,848.88x = 25,993.28 × 12,472.56
  4. Step 4: Simplify right side
    18,848.88x = 324,202,744.40
  5. Step 5: Solve for x
    x = 324,202,744.40/18,848.88
  6. Step 6: Final answer
    x = 17,200.11

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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.