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Finding the Fourth Proportional to 7,543.68, 11,312.72 and 2,612

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Solution

The fourth proportional to 7,543.68, 11,312.72 and 2,612 is: 3,917.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,543.68 : 11,312.72 = 2,612 : x
  2. Step 2: Convert to fraction form
    7,543.68/11,312.72 = 2,612/x
  3. Step 3: Cross multiply
    7,543.68x = 11,312.72 × 2,612
  4. Step 4: Simplify right side
    7,543.68x = 29,548,824.64
  5. Step 5: Solve for x
    x = 29,548,824.64/7,543.68
  6. Step 6: Final answer
    x = 3,917.03

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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.