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Finding the Fourth Proportional to 621.78, 934.56 and 541.59

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Solution

The fourth proportional to 621.78, 934.56 and 541.59 is: 814.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.78 : 934.56 = 541.59 : x
  2. Step 2: Convert to fraction form
    621.78/934.56 = 541.59/x
  3. Step 3: Cross multiply
    621.78x = 934.56 × 541.59
  4. Step 4: Simplify right side
    621.78x = 506,148.35
  5. Step 5: Solve for x
    x = 506,148.35/621.78
  6. Step 6: Final answer
    x = 814.03

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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.