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Finding the Fourth Proportional to 543,362.80, 815,044.20 and 539,863.60

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Solution

The fourth proportional to 543,362.80, 815,044.20 and 539,863.60 is: 809,795.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,362.80 : 815,044.20 = 539,863.60 : x
  2. Step 2: Convert to fraction form
    543,362.80/815,044.20 = 539,863.60/x
  3. Step 3: Cross multiply
    543,362.80x = 815,044.20 × 539,863.60
  4. Step 4: Simplify right side
    543,362.80x = 440,012,695,971.12
  5. Step 5: Solve for x
    x = 440,012,695,971.12/543,362.80
  6. Step 6: Final answer
    x = 809,795.40

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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.