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Finding the Fourth Proportional to 7,974.88, 11,008.30 and 5,991.16

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Solution

The fourth proportional to 7,974.88, 11,008.30 and 5,991.16 is: 8,270.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,974.88 : 11,008.30 = 5,991.16 : x
  2. Step 2: Convert to fraction form
    7,974.88/11,008.30 = 5,991.16/x
  3. Step 3: Cross multiply
    7,974.88x = 11,008.30 × 5,991.16
  4. Step 4: Simplify right side
    7,974.88x = 65,952,486.63
  5. Step 5: Solve for x
    x = 65,952,486.63/7,974.88
  6. Step 6: Final answer
    x = 8,270.03

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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.