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Finding the Fourth Proportional to 544,561.20, 816,647.40 and 189,586.80

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Solution

The fourth proportional to 544,561.20, 816,647.40 and 189,586.80 is: 284,312.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,561.20 : 816,647.40 = 189,586.80 : x
  2. Step 2: Convert to fraction form
    544,561.20/816,647.40 = 189,586.80/x
  3. Step 3: Cross multiply
    544,561.20x = 816,647.40 × 189,586.80
  4. Step 4: Simplify right side
    544,561.20x = 154,825,567,294.32
  5. Step 5: Solve for x
    x = 154,825,567,294.32/544,561.20
  6. Step 6: Final answer
    x = 284,312.52

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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.