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Finding the Fourth Proportional to 7,008.74, 10,512.89 and 2,847.53

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Solution

The fourth proportional to 7,008.74, 10,512.89 and 2,847.53 is: 4,271.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,008.74 : 10,512.89 = 2,847.53 : x
  2. Step 2: Convert to fraction form
    7,008.74/10,512.89 = 2,847.53/x
  3. Step 3: Cross multiply
    7,008.74x = 10,512.89 × 2,847.53
  4. Step 4: Simplify right side
    7,008.74x = 29,935,702.86
  5. Step 5: Solve for x
    x = 29,935,702.86/7,008.74
  6. Step 6: Final answer
    x = 4,271.20

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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.