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Finding the Fourth Proportional to 316,921.36, 475,568.92 and 117,381.91

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Solution

The fourth proportional to 316,921.36, 475,568.92 and 117,381.91 is: 176,142.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,921.36 : 475,568.92 = 117,381.91 : x
  2. Step 2: Convert to fraction form
    316,921.36/475,568.92 = 117,381.91/x
  3. Step 3: Cross multiply
    316,921.36x = 475,568.92 × 117,381.91
  4. Step 4: Simplify right side
    316,921.36x = 55,823,188,015.73
  5. Step 5: Solve for x
    x = 55,823,188,015.73/316,921.36
  6. Step 6: Final answer
    x = 176,142.08

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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.