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Finding the Fourth Proportional to 148,379.92, 204,759.84 and 84,705.28

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Solution

The fourth proportional to 148,379.92, 204,759.84 and 84,705.28 is: 116,890.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,379.92 : 204,759.84 = 84,705.28 : x
  2. Step 2: Convert to fraction form
    148,379.92/204,759.84 = 84,705.28/x
  3. Step 3: Cross multiply
    148,379.92x = 204,759.84 × 84,705.28
  4. Step 4: Simplify right side
    148,379.92x = 17,344,239,579.96
  5. Step 5: Solve for x
    x = 17,344,239,579.96/148,379.92
  6. Step 6: Final answer
    x = 116,890.75

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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.