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Finding the Fourth Proportional to 69,896.87, 96,451.56 and 39,683.46

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Solution

The fourth proportional to 69,896.87, 96,451.56 and 39,683.46 is: 54,759.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,896.87 : 96,451.56 = 39,683.46 : x
  2. Step 2: Convert to fraction form
    69,896.87/96,451.56 = 39,683.46/x
  3. Step 3: Cross multiply
    69,896.87x = 96,451.56 × 39,683.46
  4. Step 4: Simplify right side
    69,896.87x = 3,827,531,623.20
  5. Step 5: Solve for x
    x = 3,827,531,623.20/69,896.87
  6. Step 6: Final answer
    x = 54,759.70

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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.