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Finding the Fourth Proportional to 192,706.56, 289,031.04 and 66,366.72

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Solution

The fourth proportional to 192,706.56, 289,031.04 and 66,366.72 is: 99,540.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,706.56 : 289,031.04 = 66,366.72 : x
  2. Step 2: Convert to fraction form
    192,706.56/289,031.04 = 66,366.72/x
  3. Step 3: Cross multiply
    192,706.56x = 289,031.04 × 66,366.72
  4. Step 4: Simplify right side
    192,706.56x = 19,182,042,102.99
  5. Step 5: Solve for x
    x = 19,182,042,102.99/192,706.56
  6. Step 6: Final answer
    x = 99,540.16

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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.