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Finding the Fourth Proportional to 543,629.20, 814,666.20 and 400,356.40

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Solution

The fourth proportional to 543,629.20, 814,666.20 and 400,356.40 is: 599,961.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,629.20 : 814,666.20 = 400,356.40 : x
  2. Step 2: Convert to fraction form
    543,629.20/814,666.20 = 400,356.40/x
  3. Step 3: Cross multiply
    543,629.20x = 814,666.20 × 400,356.40
  4. Step 4: Simplify right side
    543,629.20x = 326,156,827,033.68
  5. Step 5: Solve for x
    x = 326,156,827,033.68/543,629.20
  6. Step 6: Final answer
    x = 599,961.94

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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.