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Finding the Fourth Proportional to 605,878.20, 908,817.30 and 206,969.40

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Solution

The fourth proportional to 605,878.20, 908,817.30 and 206,969.40 is: 310,454.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,878.20 : 908,817.30 = 206,969.40 : x
  2. Step 2: Convert to fraction form
    605,878.20/908,817.30 = 206,969.40/x
  3. Step 3: Cross multiply
    605,878.20x = 908,817.30 × 206,969.40
  4. Step 4: Simplify right side
    605,878.20x = 188,097,371,290.62
  5. Step 5: Solve for x
    x = 188,097,371,290.62/605,878.20
  6. Step 6: Final answer
    x = 310,454.10

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Similar ratio
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1.5x scale

Why These Related Problems?

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