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Finding the Fourth Proportional to 624,173.10, 935,712.90 and 423,843.90

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Solution

The fourth proportional to 624,173.10, 935,712.90 and 423,843.90 is: 635,394.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,173.10 : 935,712.90 = 423,843.90 : x
  2. Step 2: Convert to fraction form
    624,173.10/935,712.90 = 423,843.90/x
  3. Step 3: Cross multiply
    624,173.10x = 935,712.90 × 423,843.90
  4. Step 4: Simplify right side
    624,173.10x = 396,596,204,816.31
  5. Step 5: Solve for x
    x = 396,596,204,816.31/624,173.10
  6. Step 6: Final answer
    x = 635,394.58

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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.