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Finding the Fourth Proportional to 5,595.67, 7,721.87 and 3,077.78

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Solution

The fourth proportional to 5,595.67, 7,721.87 and 3,077.78 is: 4,247.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,595.67 : 7,721.87 = 3,077.78 : x
  2. Step 2: Convert to fraction form
    5,595.67/7,721.87 = 3,077.78/x
  3. Step 3: Cross multiply
    5,595.67x = 7,721.87 × 3,077.78
  4. Step 4: Simplify right side
    5,595.67x = 23,766,217.05
  5. Step 5: Solve for x
    x = 23,766,217.05/5,595.67
  6. Step 6: Final answer
    x = 4,247.25

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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.