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Finding the Fourth Proportional to 22,358.25, 30,854.39 and 12,927.42

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Solution

The fourth proportional to 22,358.25, 30,854.39 and 12,927.42 is: 17,839.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,358.25 : 30,854.39 = 12,927.42 : x
  2. Step 2: Convert to fraction form
    22,358.25/30,854.39 = 12,927.42/x
  3. Step 3: Cross multiply
    22,358.25x = 30,854.39 × 12,927.42
  4. Step 4: Simplify right side
    22,358.25x = 398,867,593.74
  5. Step 5: Solve for x
    x = 398,867,593.74/22,358.25
  6. Step 6: Final answer
    x = 17,839.84

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Double scale
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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.