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Finding the Fourth Proportional to 185,497.72, 278,031.66 and 85,447.96

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Solution

The fourth proportional to 185,497.72, 278,031.66 and 85,447.96 is: 128,072.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,497.72 : 278,031.66 = 85,447.96 : x
  2. Step 2: Convert to fraction form
    185,497.72/278,031.66 = 85,447.96/x
  3. Step 3: Cross multiply
    185,497.72x = 278,031.66 × 85,447.96
  4. Step 4: Simplify right side
    185,497.72x = 23,757,238,162.41
  5. Step 5: Solve for x
    x = 23,757,238,162.41/185,497.72
  6. Step 6: Final answer
    x = 128,072.94

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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.