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Finding the Fourth Proportional to 165,863.06, 228,891.03 and 90,411.56

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Solution

The fourth proportional to 165,863.06, 228,891.03 and 90,411.56 is: 124,767.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,863.06 : 228,891.03 = 90,411.56 : x
  2. Step 2: Convert to fraction form
    165,863.06/228,891.03 = 90,411.56/x
  3. Step 3: Cross multiply
    165,863.06x = 228,891.03 × 90,411.56
  4. Step 4: Simplify right side
    165,863.06x = 20,694,395,092.31
  5. Step 5: Solve for x
    x = 20,694,395,092.31/165,863.06
  6. Step 6: Final answer
    x = 124,767.96

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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.