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Finding the Fourth Proportional to 140,468.79, 193,859.59 and 80,058.90

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Solution

The fourth proportional to 140,468.79, 193,859.59 and 80,058.90 is: 110,488.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,468.79 : 193,859.59 = 80,058.90 : x
  2. Step 2: Convert to fraction form
    140,468.79/193,859.59 = 80,058.90/x
  3. Step 3: Cross multiply
    140,468.79x = 193,859.59 × 80,058.90
  4. Step 4: Simplify right side
    140,468.79x = 15,520,184,560.55
  5. Step 5: Solve for x
    x = 15,520,184,560.55/140,468.79
  6. Step 6: Final answer
    x = 110,488.49

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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.