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Finding the Fourth Proportional to 316,896.66, 475,404.93 and 127,371.78

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Solution

The fourth proportional to 316,896.66, 475,404.93 and 127,371.78 is: 191,081.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,896.66 : 475,404.93 = 127,371.78 : x
  2. Step 2: Convert to fraction form
    316,896.66/475,404.93 = 127,371.78/x
  3. Step 3: Cross multiply
    316,896.66x = 475,404.93 × 127,371.78
  4. Step 4: Simplify right side
    316,896.66x = 60,553,172,154.88
  5. Step 5: Solve for x
    x = 60,553,172,154.88/316,896.66
  6. Step 6: Final answer
    x = 191,081.76

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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.