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Finding the Fourth Proportional to 210,393.92, 315,758.28 and 110,612.72

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Solution

The fourth proportional to 210,393.92, 315,758.28 and 110,612.72 is: 166,007.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,393.92 : 315,758.28 = 110,612.72 : x
  2. Step 2: Convert to fraction form
    210,393.92/315,758.28 = 110,612.72/x
  3. Step 3: Cross multiply
    210,393.92x = 315,758.28 × 110,612.72
  4. Step 4: Simplify right side
    210,393.92x = 34,926,882,213.32
  5. Step 5: Solve for x
    x = 34,926,882,213.32/210,393.92
  6. Step 6: Final answer
    x = 166,007.09

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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.