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Finding the Fourth Proportional to 20,655.24, 30,984.38 and 5,865.24

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Solution

The fourth proportional to 20,655.24, 30,984.38 and 5,865.24 is: 8,798.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,655.24 : 30,984.38 = 5,865.24 : x
  2. Step 2: Convert to fraction form
    20,655.24/30,984.38 = 5,865.24/x
  3. Step 3: Cross multiply
    20,655.24x = 30,984.38 × 5,865.24
  4. Step 4: Simplify right side
    20,655.24x = 181,730,824.95
  5. Step 5: Solve for x
    x = 181,730,824.95/20,655.24
  6. Step 6: Final answer
    x = 8,798.29

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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.