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Finding the Fourth Proportional to 372,278.76, 513,744.30 and 202,512.48

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Solution

The fourth proportional to 372,278.76, 513,744.30 and 202,512.48 is: 279,467.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,278.76 : 513,744.30 = 202,512.48 : x
  2. Step 2: Convert to fraction form
    372,278.76/513,744.30 = 202,512.48/x
  3. Step 3: Cross multiply
    372,278.76x = 513,744.30 × 202,512.48
  4. Step 4: Simplify right side
    372,278.76x = 104,039,632,278.86
  5. Step 5: Solve for x
    x = 104,039,632,278.86/372,278.76
  6. Step 6: Final answer
    x = 279,467.01

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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.