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Finding the Fourth Proportional to 418,250.35, 627,020.82 and 165,709.26

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Solution

The fourth proportional to 418,250.35, 627,020.82 and 165,709.26 is: 248,423.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,250.35 : 627,020.82 = 165,709.26 : x
  2. Step 2: Convert to fraction form
    418,250.35/627,020.82 = 165,709.26/x
  3. Step 3: Cross multiply
    418,250.35x = 627,020.82 × 165,709.26
  4. Step 4: Simplify right side
    418,250.35x = 103,903,156,086.79
  5. Step 5: Solve for x
    x = 103,903,156,086.79/418,250.35
  6. Step 6: Final answer
    x = 248,423.36

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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.