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Finding the Fourth Proportional to 8,607.67, 11,876.42 and 5,070.20

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Solution

The fourth proportional to 8,607.67, 11,876.42 and 5,070.20 is: 6,995.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,607.67 : 11,876.42 = 5,070.20 : x
  2. Step 2: Convert to fraction form
    8,607.67/11,876.42 = 5,070.20/x
  3. Step 3: Cross multiply
    8,607.67x = 11,876.42 × 5,070.20
  4. Step 4: Simplify right side
    8,607.67x = 60,215,777.98
  5. Step 5: Solve for x
    x = 60,215,777.98/8,607.67
  6. Step 6: Final answer
    x = 6,995.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.