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Finding the Fourth Proportional to 185,415.52, 278,192.88 and 85,623.52

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Solution

The fourth proportional to 185,415.52, 278,192.88 and 85,623.52 is: 128,467.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,415.52 : 278,192.88 = 85,623.52 : x
  2. Step 2: Convert to fraction form
    185,415.52/278,192.88 = 85,623.52/x
  3. Step 3: Cross multiply
    185,415.52x = 278,192.88 × 85,623.52
  4. Step 4: Simplify right side
    185,415.52x = 23,819,853,624.54
  5. Step 5: Solve for x
    x = 23,819,853,624.54/185,415.52
  6. Step 6: Final answer
    x = 128,467.42

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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.