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Finding the Fourth Proportional to 194,185.92, 291,392.16 and 81,859.32

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Solution

The fourth proportional to 194,185.92, 291,392.16 and 81,859.32 is: 122,836.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,185.92 : 291,392.16 = 81,859.32 : x
  2. Step 2: Convert to fraction form
    194,185.92/291,392.16 = 81,859.32/x
  3. Step 3: Cross multiply
    194,185.92x = 291,392.16 × 81,859.32
  4. Step 4: Simplify right side
    194,185.92x = 23,853,164,070.93
  5. Step 5: Solve for x
    x = 23,853,164,070.93/194,185.92
  6. Step 6: Final answer
    x = 122,836.73

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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.