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Finding the Fourth Proportional to 18,672.19, 25,774.23 and 16,679.29

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Solution

The fourth proportional to 18,672.19, 25,774.23 and 16,679.29 is: 23,023.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,672.19 : 25,774.23 = 16,679.29 : x
  2. Step 2: Convert to fraction form
    18,672.19/25,774.23 = 16,679.29/x
  3. Step 3: Cross multiply
    18,672.19x = 25,774.23 × 16,679.29
  4. Step 4: Simplify right side
    18,672.19x = 429,895,727.83
  5. Step 5: Solve for x
    x = 429,895,727.83/18,672.19
  6. Step 6: Final answer
    x = 23,023.32

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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.