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Finding the Fourth Proportional to 9,053.78, 13,581.07 and 4,679.78

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Solution

The fourth proportional to 9,053.78, 13,581.07 and 4,679.78 is: 7,019.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,053.78 : 13,581.07 = 4,679.78 : x
  2. Step 2: Convert to fraction form
    9,053.78/13,581.07 = 4,679.78/x
  3. Step 3: Cross multiply
    9,053.78x = 13,581.07 × 4,679.78
  4. Step 4: Simplify right side
    9,053.78x = 63,556,340.16
  5. Step 5: Solve for x
    x = 63,556,340.16/9,053.78
  6. Step 6: Final answer
    x = 7,019.87

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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.