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Finding the Fourth Proportional to 83,998.80, 118,998.36 and 83,998.80

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Solution

The fourth proportional to 83,998.80, 118,998.36 and 83,998.80 is: 118,998.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,998.80 : 118,998.36 = 83,998.80 : x
  2. Step 2: Convert to fraction form
    83,998.80/118,998.36 = 83,998.80/x
  3. Step 3: Cross multiply
    83,998.80x = 118,998.36 × 83,998.80
  4. Step 4: Simplify right side
    83,998.80x = 9,995,719,441.97
  5. Step 5: Solve for x
    x = 9,995,719,441.97/83,998.80
  6. Step 6: Final answer
    x = 118,998.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.