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Finding the Fourth Proportional to 89,745.63, 123,847.12 and 49,458.36

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Solution

The fourth proportional to 89,745.63, 123,847.12 and 49,458.36 is: 68,251.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,745.63 : 123,847.12 = 49,458.36 : x
  2. Step 2: Convert to fraction form
    89,745.63/123,847.12 = 49,458.36/x
  3. Step 3: Cross multiply
    89,745.63x = 123,847.12 × 49,458.36
  4. Step 4: Simplify right side
    89,745.63x = 6,125,275,445.92
  5. Step 5: Solve for x
    x = 6,125,275,445.92/89,745.63
  6. Step 6: Final answer
    x = 68,251.52

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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.