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Finding the Fourth Proportional to 69,866.89, 96,410.77 and 39,652.21

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Solution

The fourth proportional to 69,866.89, 96,410.77 and 39,652.21 is: 54,716.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,866.89 : 96,410.77 = 39,652.21 : x
  2. Step 2: Convert to fraction form
    69,866.89/96,410.77 = 39,652.21/x
  3. Step 3: Cross multiply
    69,866.89x = 96,410.77 × 39,652.21
  4. Step 4: Simplify right side
    69,866.89x = 3,822,900,098.30
  5. Step 5: Solve for x
    x = 3,822,900,098.30/69,866.89
  6. Step 6: Final answer
    x = 54,716.91

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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.