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Finding the Fourth Proportional to 85,399.92, 117,843.60 and 58,565.44

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Solution

The fourth proportional to 85,399.92, 117,843.60 and 58,565.44 is: 80,814.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,399.92 : 117,843.60 = 58,565.44 : x
  2. Step 2: Convert to fraction form
    85,399.92/117,843.60 = 58,565.44/x
  3. Step 3: Cross multiply
    85,399.92x = 117,843.60 × 58,565.44
  4. Step 4: Simplify right side
    85,399.92x = 6,901,562,285.18
  5. Step 5: Solve for x
    x = 6,901,562,285.18/85,399.92
  6. Step 6: Final answer
    x = 80,814.62

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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.