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Finding the Fourth Proportional to 639,177.26, 958,897.09 and 189,858.11

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Solution

The fourth proportional to 639,177.26, 958,897.09 and 189,858.11 is: 284,826.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,177.26 : 958,897.09 = 189,858.11 : x
  2. Step 2: Convert to fraction form
    639,177.26/958,897.09 = 189,858.11/x
  3. Step 3: Cross multiply
    639,177.26x = 958,897.09 × 189,858.11
  4. Step 4: Simplify right side
    639,177.26x = 182,054,384,634.74
  5. Step 5: Solve for x
    x = 182,054,384,634.74/639,177.26
  6. Step 6: Final answer
    x = 284,826.13

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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.