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Finding the Fourth Proportional to 18,602.25, 25,671.20 and 10,218.75

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Solution

The fourth proportional to 18,602.25, 25,671.20 and 10,218.75 is: 14,101.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,602.25 : 25,671.20 = 10,218.75 : x
  2. Step 2: Convert to fraction form
    18,602.25/25,671.20 = 10,218.75/x
  3. Step 3: Cross multiply
    18,602.25x = 25,671.20 × 10,218.75
  4. Step 4: Simplify right side
    18,602.25x = 262,327,523.91
  5. Step 5: Solve for x
    x = 262,327,523.91/18,602.25
  6. Step 6: Final answer
    x = 14,101.92

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Half scale
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Double scale
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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.