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Finding the Fourth Proportional to 20,398.01, 30,591.13 and 5,607.41

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Solution

The fourth proportional to 20,398.01, 30,591.13 and 5,607.41 is: 8,409.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,398.01 : 30,591.13 = 5,607.41 : x
  2. Step 2: Convert to fraction form
    20,398.01/30,591.13 = 5,607.41/x
  3. Step 3: Cross multiply
    20,398.01x = 30,591.13 × 5,607.41
  4. Step 4: Simplify right side
    20,398.01x = 171,537,008.27
  5. Step 5: Solve for x
    x = 171,537,008.27/20,398.01
  6. Step 6: Final answer
    x = 8,409.50

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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.