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Finding the Fourth Proportional to 20,460.96, 30,692.10 and 5,670.02

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Solution

The fourth proportional to 20,460.96, 30,692.10 and 5,670.02 is: 8,505.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,460.96 : 30,692.10 = 5,670.02 : x
  2. Step 2: Convert to fraction form
    20,460.96/30,692.10 = 5,670.02/x
  3. Step 3: Cross multiply
    20,460.96x = 30,692.10 × 5,670.02
  4. Step 4: Simplify right side
    20,460.96x = 174,024,820.84
  5. Step 5: Solve for x
    x = 174,024,820.84/20,460.96
  6. Step 6: Final answer
    x = 8,505.21

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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.