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Finding the Fourth Proportional to 13,445.76, 20,171.76 and 4,560.62

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Solution

The fourth proportional to 13,445.76, 20,171.76 and 4,560.62 is: 6,841.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.76 : 20,171.76 = 4,560.62 : x
  2. Step 2: Convert to fraction form
    13,445.76/20,171.76 = 4,560.62/x
  3. Step 3: Cross multiply
    13,445.76x = 20,171.76 × 4,560.62
  4. Step 4: Simplify right side
    13,445.76x = 91,995,740.42
  5. Step 5: Solve for x
    x = 91,995,740.42/13,445.76
  6. Step 6: Final answer
    x = 6,841.99

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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.