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Finding the Fourth Proportional to 298,058.80, 411,157.20 and 188,963.68

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Solution

The fourth proportional to 298,058.80, 411,157.20 and 188,963.68 is: 260,665.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,058.80 : 411,157.20 = 188,963.68 : x
  2. Step 2: Convert to fraction form
    298,058.80/411,157.20 = 188,963.68/x
  3. Step 3: Cross multiply
    298,058.80x = 411,157.20 × 188,963.68
  4. Step 4: Simplify right side
    298,058.80x = 77,693,777,570.50
  5. Step 5: Solve for x
    x = 77,693,777,570.50/298,058.80
  6. Step 6: Final answer
    x = 260,665.94

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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.