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Finding the Fourth Proportional to 625,777.17, 938,354.89 and 199,257.31

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Solution

The fourth proportional to 625,777.17, 938,354.89 and 199,257.31 is: 298,786.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,777.17 : 938,354.89 = 199,257.31 : x
  2. Step 2: Convert to fraction form
    625,777.17/938,354.89 = 199,257.31/x
  3. Step 3: Cross multiply
    625,777.17x = 938,354.89 × 199,257.31
  4. Step 4: Simplify right side
    625,777.17x = 186,974,071,206.75
  5. Step 5: Solve for x
    x = 186,974,071,206.75/625,777.17
  6. Step 6: Final answer
    x = 298,786.98

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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.