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Finding the Fourth Proportional to 624,891.54, 938,832.68 and 400,691.24

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Solution

The fourth proportional to 624,891.54, 938,832.68 and 400,691.24 is: 601,995.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,891.54 : 938,832.68 = 400,691.24 : x
  2. Step 2: Convert to fraction form
    624,891.54/938,832.68 = 400,691.24/x
  3. Step 3: Cross multiply
    624,891.54x = 938,832.68 × 400,691.24
  4. Step 4: Simplify right side
    624,891.54x = 376,182,030,701.72
  5. Step 5: Solve for x
    x = 376,182,030,701.72/624,891.54
  6. Step 6: Final answer
    x = 601,995.72

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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.