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Finding the Fourth Proportional to 7,396.80, 11,088 and 2,715.48

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Solution

The fourth proportional to 7,396.80, 11,088 and 2,715.48 is: 4,070.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,396.80 : 11,088 = 2,715.48 : x
  2. Step 2: Convert to fraction form
    7,396.80/11,088 = 2,715.48/x
  3. Step 3: Cross multiply
    7,396.80x = 11,088 × 2,715.48
  4. Step 4: Simplify right side
    7,396.80x = 30,109,242.24
  5. Step 5: Solve for x
    x = 30,109,242.24/7,396.80
  6. Step 6: Final answer
    x = 4,070.58

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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.