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Finding the Fourth Proportional to 624,078.20, 935,987.70 and 269,103.80

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Solution

The fourth proportional to 624,078.20, 935,987.70 and 269,103.80 is: 403,599.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,078.20 : 935,987.70 = 269,103.80 : x
  2. Step 2: Convert to fraction form
    624,078.20/935,987.70 = 269,103.80/x
  3. Step 3: Cross multiply
    624,078.20x = 935,987.70 × 269,103.80
  4. Step 4: Simplify right side
    624,078.20x = 251,877,846,823.26
  5. Step 5: Solve for x
    x = 251,877,846,823.26/624,078.20
  6. Step 6: Final answer
    x = 403,599.82

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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.