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Finding the Fourth Proportional to 206,990.80, 310,486.20 and 59,246.80

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Solution

The fourth proportional to 206,990.80, 310,486.20 and 59,246.80 is: 88,870.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,990.80 : 310,486.20 = 59,246.80 : x
  2. Step 2: Convert to fraction form
    206,990.80/310,486.20 = 59,246.80/x
  3. Step 3: Cross multiply
    206,990.80x = 310,486.20 × 59,246.80
  4. Step 4: Simplify right side
    206,990.80x = 18,395,313,794.16
  5. Step 5: Solve for x
    x = 18,395,313,794.16/206,990.80
  6. Step 6: Final answer
    x = 88,870.20

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.