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Finding the Fourth Proportional to 194,186.44, 291,392.84 and 81,859.76

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Solution

The fourth proportional to 194,186.44, 291,392.84 and 81,859.76 is: 122,837.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,186.44 : 291,392.84 = 81,859.76 : x
  2. Step 2: Convert to fraction form
    194,186.44/291,392.84 = 81,859.76/x
  3. Step 3: Cross multiply
    194,186.44x = 291,392.84 × 81,859.76
  4. Step 4: Simplify right side
    194,186.44x = 23,853,347,948.12
  5. Step 5: Solve for x
    x = 23,853,347,948.12/194,186.44
  6. Step 6: Final answer
    x = 122,837.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.