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Finding the Fourth Proportional to 18,726.56, 28,092.88 and 7,040.72

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Solution

The fourth proportional to 18,726.56, 28,092.88 and 7,040.72 is: 10,562.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,726.56 : 28,092.88 = 7,040.72 : x
  2. Step 2: Convert to fraction form
    18,726.56/28,092.88 = 7,040.72/x
  3. Step 3: Cross multiply
    18,726.56x = 28,092.88 × 7,040.72
  4. Step 4: Simplify right side
    18,726.56x = 197,794,102.07
  5. Step 5: Solve for x
    x = 197,794,102.07/18,726.56
  6. Step 6: Final answer
    x = 10,562.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.