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Finding the Fourth Proportional to 24,221.40, 36,345.90 and 9,428.40

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Solution

The fourth proportional to 24,221.40, 36,345.90 and 9,428.40 is: 14,147.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    24,221.40 : 36,345.90 = 9,428.40 : x
  2. Step 2: Convert to fraction form
    24,221.40/36,345.90 = 9,428.40/x
  3. Step 3: Cross multiply
    24,221.40x = 36,345.90 × 9,428.40
  4. Step 4: Simplify right side
    24,221.40x = 342,683,683.56
  5. Step 5: Solve for x
    x = 342,683,683.56/24,221.40
  6. Step 6: Final answer
    x = 14,147.97

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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.