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Finding the Fourth Proportional to 14,868.48, 20,517.76 and 8,580.48

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Solution

The fourth proportional to 14,868.48, 20,517.76 and 8,580.48 is: 11,840.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,868.48 : 20,517.76 = 8,580.48 : x
  2. Step 2: Convert to fraction form
    14,868.48/20,517.76 = 8,580.48/x
  3. Step 3: Cross multiply
    14,868.48x = 20,517.76 × 8,580.48
  4. Step 4: Simplify right side
    14,868.48x = 176,052,229.32
  5. Step 5: Solve for x
    x = 176,052,229.32/14,868.48
  6. Step 6: Final answer
    x = 11,840.63

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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.