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Finding the Fourth Proportional to 22,385.88, 30,892.14 and 12,695.76

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Solution

The fourth proportional to 22,385.88, 30,892.14 and 12,695.76 is: 17,519.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,385.88 : 30,892.14 = 12,695.76 : x
  2. Step 2: Convert to fraction form
    22,385.88/30,892.14 = 12,695.76/x
  3. Step 3: Cross multiply
    22,385.88x = 30,892.14 × 12,695.76
  4. Step 4: Simplify right side
    22,385.88x = 392,199,195.33
  5. Step 5: Solve for x
    x = 392,199,195.33/22,385.88
  6. Step 6: Final answer
    x = 17,519.94

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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.