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Finding the Fourth Proportional to 372,377.57, 513,865.91 and 211,229.16

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Solution

The fourth proportional to 372,377.57, 513,865.91 and 211,229.16 is: 291,487.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,377.57 : 513,865.91 = 211,229.16 : x
  2. Step 2: Convert to fraction form
    372,377.57/513,865.91 = 211,229.16/x
  3. Step 3: Cross multiply
    372,377.57x = 513,865.91 × 211,229.16
  4. Step 4: Simplify right side
    372,377.57x = 108,543,464,086.51
  5. Step 5: Solve for x
    x = 108,543,464,086.51/372,377.57
  6. Step 6: Final answer
    x = 291,487.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.