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Finding the Fourth Proportional to 316,853.91, 475,340.81 and 127,329.03

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Solution

The fourth proportional to 316,853.91, 475,340.81 and 127,329.03 is: 191,017.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,853.91 : 475,340.81 = 127,329.03 : x
  2. Step 2: Convert to fraction form
    316,853.91/475,340.81 = 127,329.03/x
  3. Step 3: Cross multiply
    316,853.91x = 475,340.81 × 127,329.03
  4. Step 4: Simplify right side
    316,853.91x = 60,524,683,620.07
  5. Step 5: Solve for x
    x = 60,524,683,620.07/316,853.91
  6. Step 6: Final answer
    x = 191,017.63

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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.