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Finding the Fourth Proportional to 372,002.73, 513,403.88 and 210,840.48

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Solution

The fourth proportional to 372,002.73, 513,403.88 and 210,840.48 is: 290,982.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,002.73 : 513,403.88 = 210,840.48 : x
  2. Step 2: Convert to fraction form
    372,002.73/513,403.88 = 210,840.48/x
  3. Step 3: Cross multiply
    372,002.73x = 513,403.88 × 210,840.48
  4. Step 4: Simplify right side
    372,002.73x = 108,246,320,493.06
  5. Step 5: Solve for x
    x = 108,246,320,493.06/372,002.73
  6. Step 6: Final answer
    x = 290,982.60

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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.