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Finding the Fourth Proportional to 7,390.78, 11,082.08 and 5,053.41

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Solution

The fourth proportional to 7,390.78, 11,082.08 and 5,053.41 is: 7,577.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,390.78 : 11,082.08 = 5,053.41 : x
  2. Step 2: Convert to fraction form
    7,390.78/11,082.08 = 5,053.41/x
  3. Step 3: Cross multiply
    7,390.78x = 11,082.08 × 5,053.41
  4. Step 4: Simplify right side
    7,390.78x = 56,002,306.53
  5. Step 5: Solve for x
    x = 56,002,306.53/7,390.78
  6. Step 6: Final answer
    x = 7,577.32

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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.