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Finding the Fourth Proportional to 9,078.48, 13,608.04 and 5,174.48

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Solution

The fourth proportional to 9,078.48, 13,608.04 and 5,174.48 is: 7,756.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,078.48 : 13,608.04 = 5,174.48 : x
  2. Step 2: Convert to fraction form
    9,078.48/13,608.04 = 5,174.48/x
  3. Step 3: Cross multiply
    9,078.48x = 13,608.04 × 5,174.48
  4. Step 4: Simplify right side
    9,078.48x = 70,414,530.82
  5. Step 5: Solve for x
    x = 70,414,530.82/9,078.48
  6. Step 6: Final answer
    x = 7,756.20

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1.5x scale

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.