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Finding the Fourth Proportional to 115,098.57, 158,844 and 69,778.44

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Solution

The fourth proportional to 115,098.57, 158,844 and 69,778.44 is: 96,299.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,098.57 : 158,844 = 69,778.44 : x
  2. Step 2: Convert to fraction form
    115,098.57/158,844 = 69,778.44/x
  3. Step 3: Cross multiply
    115,098.57x = 158,844 × 69,778.44
  4. Step 4: Simplify right side
    115,098.57x = 11,083,886,523.36
  5. Step 5: Solve for x
    x = 11,083,886,523.36/115,098.57
  6. Step 6: Final answer
    x = 96,299.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.