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Finding the Fourth Proportional to 20,061.92, 30,071.76 and 9,651.68

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Solution

The fourth proportional to 20,061.92, 30,071.76 and 9,651.68 is: 14,467.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,061.92 : 30,071.76 = 9,651.68 : x
  2. Step 2: Convert to fraction form
    20,061.92/30,071.76 = 9,651.68/x
  3. Step 3: Cross multiply
    20,061.92x = 30,071.76 × 9,651.68
  4. Step 4: Simplify right side
    20,061.92x = 290,243,004.56
  5. Step 5: Solve for x
    x = 290,243,004.56/20,061.92
  6. Step 6: Final answer
    x = 14,467.36

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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.