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Finding the Fourth Proportional to 8,968.64, 12,377.13 and 7,474.06

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Solution

The fourth proportional to 8,968.64, 12,377.13 and 7,474.06 is: 10,314.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,968.64 : 12,377.13 = 7,474.06 : x
  2. Step 2: Convert to fraction form
    8,968.64/12,377.13 = 7,474.06/x
  3. Step 3: Cross multiply
    8,968.64x = 12,377.13 × 7,474.06
  4. Step 4: Simplify right side
    8,968.64x = 92,507,381.30
  5. Step 5: Solve for x
    x = 92,507,381.30/8,968.64
  6. Step 6: Final answer
    x = 10,314.54

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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.