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Finding the Fourth Proportional to 8,607.15, 11,883.58 and 6,614.15

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Solution

The fourth proportional to 8,607.15, 11,883.58 and 6,614.15 is: 9,131.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,607.15 : 11,883.58 = 6,614.15 : x
  2. Step 2: Convert to fraction form
    8,607.15/11,883.58 = 6,614.15/x
  3. Step 3: Cross multiply
    8,607.15x = 11,883.58 × 6,614.15
  4. Step 4: Simplify right side
    8,607.15x = 78,599,704.70
  5. Step 5: Solve for x
    x = 78,599,704.70/8,607.15
  6. Step 6: Final answer
    x = 9,131.91

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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.