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Finding the Fourth Proportional to 286,998.90, 396,060.28 and 157,933.80

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Solution

The fourth proportional to 286,998.90, 396,060.28 and 157,933.80 is: 217,949.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,998.90 : 396,060.28 = 157,933.80 : x
  2. Step 2: Convert to fraction form
    286,998.90/396,060.28 = 157,933.80/x
  3. Step 3: Cross multiply
    286,998.90x = 396,060.28 × 157,933.80
  4. Step 4: Simplify right side
    286,998.90x = 62,551,305,543.01
  5. Step 5: Solve for x
    x = 62,551,305,543.01/286,998.90
  6. Step 6: Final answer
    x = 217,949.64

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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.