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Finding the Fourth Proportional to 69,922.49, 96,489.68 and 39,703.82

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Solution

The fourth proportional to 69,922.49, 96,489.68 and 39,703.82 is: 54,789.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,922.49 : 96,489.68 = 39,703.82 : x
  2. Step 2: Convert to fraction form
    69,922.49/96,489.68 = 39,703.82/x
  3. Step 3: Cross multiply
    69,922.49x = 96,489.68 × 39,703.82
  4. Step 4: Simplify right side
    69,922.49x = 3,831,008,971.70
  5. Step 5: Solve for x
    x = 3,831,008,971.70/69,922.49
  6. Step 6: Final answer
    x = 54,789.37

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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.