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Finding the Fourth Proportional to 543,389.80, 814,024.38 and 355,832.68

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Solution

The fourth proportional to 543,389.80, 814,024.38 and 355,832.68 is: 533,054.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,389.80 : 814,024.38 = 355,832.68 : x
  2. Step 2: Convert to fraction form
    543,389.80/814,024.38 = 355,832.68/x
  3. Step 3: Cross multiply
    543,389.80x = 814,024.38 × 355,832.68
  4. Step 4: Simplify right side
    543,389.80x = 289,656,476,720.74
  5. Step 5: Solve for x
    x = 289,656,476,720.74/543,389.80
  6. Step 6: Final answer
    x = 533,054.68

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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.