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Finding the Fourth Proportional to 10,608.60, 15,914.70 and 5,676.90

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Solution

The fourth proportional to 10,608.60, 15,914.70 and 5,676.90 is: 8,516.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,608.60 : 15,914.70 = 5,676.90 : x
  2. Step 2: Convert to fraction form
    10,608.60/15,914.70 = 5,676.90/x
  3. Step 3: Cross multiply
    10,608.60x = 15,914.70 × 5,676.90
  4. Step 4: Simplify right side
    10,608.60x = 90,346,160.43
  5. Step 5: Solve for x
    x = 90,346,160.43/10,608.60
  6. Step 6: Final answer
    x = 8,516.31

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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.