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Finding the Fourth Proportional to 624,616.20, 937,361.70 and 400,521.60

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Solution

The fourth proportional to 624,616.20, 937,361.70 and 400,521.60 is: 601,062.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,616.20 : 937,361.70 = 400,521.60 : x
  2. Step 2: Convert to fraction form
    624,616.20/937,361.70 = 400,521.60/x
  3. Step 3: Cross multiply
    624,616.20x = 937,361.70 × 400,521.60
  4. Step 4: Simplify right side
    624,616.20x = 375,433,607,862.72
  5. Step 5: Solve for x
    x = 375,433,607,862.72/624,616.20
  6. Step 6: Final answer
    x = 601,062.87

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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.