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Finding the Fourth Proportional to 185,288.01, 277,876.88 and 78,670.39

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Solution

The fourth proportional to 185,288.01, 277,876.88 and 78,670.39 is: 117,982.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,288.01 : 277,876.88 = 78,670.39 : x
  2. Step 2: Convert to fraction form
    185,288.01/277,876.88 = 78,670.39/x
  3. Step 3: Cross multiply
    185,288.01x = 277,876.88 × 78,670.39
  4. Step 4: Simplify right side
    185,288.01x = 21,860,682,521.58
  5. Step 5: Solve for x
    x = 21,860,682,521.58/185,288.01
  6. Step 6: Final answer
    x = 117,982.18

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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.