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Finding the Fourth Proportional to 18,644.76, 25,713.18 and 18,551.70

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Solution

The fourth proportional to 18,644.76, 25,713.18 and 18,551.70 is: 25,584.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,644.76 : 25,713.18 = 18,551.70 : x
  2. Step 2: Convert to fraction form
    18,644.76/25,713.18 = 18,551.70/x
  3. Step 3: Cross multiply
    18,644.76x = 25,713.18 × 18,551.70
  4. Step 4: Simplify right side
    18,644.76x = 477,023,201.41
  5. Step 5: Solve for x
    x = 477,023,201.41/18,644.76
  6. Step 6: Final answer
    x = 25,584.84

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Half scale
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Double scale
Find fourth proportional to 18,645.76, 25,714.56 and 18,552.70
Similar ratio
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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.