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Finding the Fourth Proportional to 206,637.84, 285,086.88 and 135,059.18

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Solution

The fourth proportional to 206,637.84, 285,086.88 and 135,059.18 is: 186,333.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,637.84 : 285,086.88 = 135,059.18 : x
  2. Step 2: Convert to fraction form
    206,637.84/285,086.88 = 135,059.18/x
  3. Step 3: Cross multiply
    206,637.84x = 285,086.88 × 135,059.18
  4. Step 4: Simplify right side
    206,637.84x = 38,503,598,816.12
  5. Step 5: Solve for x
    x = 38,503,598,816.12/206,637.84
  6. Step 6: Final answer
    x = 186,333.73

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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.