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Finding the Fourth Proportional to 544,611.72, 816,921.64 and 189,625.20

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Solution

The fourth proportional to 544,611.72, 816,921.64 and 189,625.20 is: 284,439.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,611.72 : 816,921.64 = 189,625.20 : x
  2. Step 2: Convert to fraction form
    544,611.72/816,921.64 = 189,625.20/x
  3. Step 3: Cross multiply
    544,611.72x = 816,921.64 × 189,625.20
  4. Step 4: Simplify right side
    544,611.72x = 154,908,929,369.33
  5. Step 5: Solve for x
    x = 154,908,929,369.33/544,611.72
  6. Step 6: Final answer
    x = 284,439.21

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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.