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Finding the Fourth Proportional to 7,714.72, 11,570.16 and 6,328

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Solution

The fourth proportional to 7,714.72, 11,570.16 and 6,328 is: 9,490.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,714.72 : 11,570.16 = 6,328 : x
  2. Step 2: Convert to fraction form
    7,714.72/11,570.16 = 6,328/x
  3. Step 3: Cross multiply
    7,714.72x = 11,570.16 × 6,328
  4. Step 4: Simplify right side
    7,714.72x = 73,215,972.48
  5. Step 5: Solve for x
    x = 73,215,972.48/7,714.72
  6. Step 6: Final answer
    x = 9,490.43

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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.