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Finding the Fourth Proportional to 543,347.20, 814,243.20 and 400,074.40

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Solution

The fourth proportional to 543,347.20, 814,243.20 and 400,074.40 is: 599,539.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,347.20 : 814,243.20 = 400,074.40 : x
  2. Step 2: Convert to fraction form
    543,347.20/814,243.20 = 400,074.40/x
  3. Step 3: Cross multiply
    543,347.20x = 814,243.20 × 400,074.40
  4. Step 4: Simplify right side
    543,347.20x = 325,757,859,694.08
  5. Step 5: Solve for x
    x = 325,757,859,694.08/543,347.20
  6. Step 6: Final answer
    x = 599,539.04

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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.