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Finding the Fourth Proportional to 5,331.42, 8,008.74 and 5,156.46

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Solution

The fourth proportional to 5,331.42, 8,008.74 and 5,156.46 is: 7,745.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,331.42 : 8,008.74 = 5,156.46 : x
  2. Step 2: Convert to fraction form
    5,331.42/8,008.74 = 5,156.46/x
  3. Step 3: Cross multiply
    5,331.42x = 8,008.74 × 5,156.46
  4. Step 4: Simplify right side
    5,331.42x = 41,296,747.46
  5. Step 5: Solve for x
    x = 41,296,747.46/5,331.42
  6. Step 6: Final answer
    x = 7,745.92

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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.