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Finding the Fourth Proportional to 13,355.68, 20,032.80 and 3,995.68

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Solution

The fourth proportional to 13,355.68, 20,032.80 and 3,995.68 is: 5,993.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,355.68 : 20,032.80 = 3,995.68 : x
  2. Step 2: Convert to fraction form
    13,355.68/20,032.80 = 3,995.68/x
  3. Step 3: Cross multiply
    13,355.68x = 20,032.80 × 3,995.68
  4. Step 4: Simplify right side
    13,355.68x = 80,044,658.30
  5. Step 5: Solve for x
    x = 80,044,658.30/13,355.68
  6. Step 6: Final answer
    x = 5,993.30

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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.