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Finding the Fourth Proportional to 8,695.67, 11,996.03 and 5,157.59

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Solution

The fourth proportional to 8,695.67, 11,996.03 and 5,157.59 is: 7,115.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,695.67 : 11,996.03 = 5,157.59 : x
  2. Step 2: Convert to fraction form
    8,695.67/11,996.03 = 5,157.59/x
  3. Step 3: Cross multiply
    8,695.67x = 11,996.03 × 5,157.59
  4. Step 4: Simplify right side
    8,695.67x = 61,870,557.28
  5. Step 5: Solve for x
    x = 61,870,557.28/8,695.67
  6. Step 6: Final answer
    x = 7,115.10

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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.