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Finding the Fourth Proportional to 399,351.11, 598,878.95 and 114,945.62

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Solution

The fourth proportional to 399,351.11, 598,878.95 and 114,945.62 is: 172,375.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,351.11 : 598,878.95 = 114,945.62 : x
  2. Step 2: Convert to fraction form
    399,351.11/598,878.95 = 114,945.62/x
  3. Step 3: Cross multiply
    399,351.11x = 598,878.95 × 114,945.62
  4. Step 4: Simplify right side
    399,351.11x = 68,838,508,643.58
  5. Step 5: Solve for x
    x = 68,838,508,643.58/399,351.11
  6. Step 6: Final answer
    x = 172,375.91

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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.