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Finding the Fourth Proportional to 18,195.30, 27,294.21 and 7,098.30

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Solution

The fourth proportional to 18,195.30, 27,294.21 and 7,098.30 is: 10,647.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,195.30 : 27,294.21 = 7,098.30 : x
  2. Step 2: Convert to fraction form
    18,195.30/27,294.21 = 7,098.30/x
  3. Step 3: Cross multiply
    18,195.30x = 27,294.21 × 7,098.30
  4. Step 4: Simplify right side
    18,195.30x = 193,742,490.84
  5. Step 5: Solve for x
    x = 193,742,490.84/18,195.30
  6. Step 6: Final answer
    x = 10,647.94

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.