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Finding the Fourth Proportional to 543,907.20, 815,860.81 and 206,870.00

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Solution

The fourth proportional to 543,907.20, 815,860.81 and 206,870.00 is: 310,305.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,907.20 : 815,860.81 = 206,870.00 : x
  2. Step 2: Convert to fraction form
    543,907.20/815,860.81 = 206,870.00/x
  3. Step 3: Cross multiply
    543,907.20x = 815,860.81 × 206,870.00
  4. Step 4: Simplify right side
    543,907.20x = 168,777,125,369.56
  5. Step 5: Solve for x
    x = 168,777,125,369.56/543,907.20
  6. Step 6: Final answer
    x = 310,305.00

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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.