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Finding the Fourth Proportional to 69,678.72, 104,518.98 and 27,540.69

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Solution

The fourth proportional to 69,678.72, 104,518.98 and 27,540.69 is: 41,311.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,678.72 : 104,518.98 = 27,540.69 : x
  2. Step 2: Convert to fraction form
    69,678.72/104,518.98 = 27,540.69/x
  3. Step 3: Cross multiply
    69,678.72x = 104,518.98 × 27,540.69
  4. Step 4: Simplify right side
    69,678.72x = 2,878,524,827.30
  5. Step 5: Solve for x
    x = 2,878,524,827.30/69,678.72
  6. Step 6: Final answer
    x = 41,311.39

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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.