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Finding the Fourth Proportional to 13,574.43, 20,348.88 and 7,325.08

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Solution

The fourth proportional to 13,574.43, 20,348.88 and 7,325.08 is: 10,980.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,574.43 : 20,348.88 = 7,325.08 : x
  2. Step 2: Convert to fraction form
    13,574.43/20,348.88 = 7,325.08/x
  3. Step 3: Cross multiply
    13,574.43x = 20,348.88 × 7,325.08
  4. Step 4: Simplify right side
    13,574.43x = 149,057,173.91
  5. Step 5: Solve for x
    x = 149,057,173.91/13,574.43
  6. Step 6: Final answer
    x = 10,980.73

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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.