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Finding the Fourth Proportional to 72,076.44, 108,108.06 and 51,106.44

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Solution

The fourth proportional to 72,076.44, 108,108.06 and 51,106.44 is: 76,654.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,076.44 : 108,108.06 = 51,106.44 : x
  2. Step 2: Convert to fraction form
    72,076.44/108,108.06 = 51,106.44/x
  3. Step 3: Cross multiply
    72,076.44x = 108,108.06 × 51,106.44
  4. Step 4: Simplify right side
    72,076.44x = 5,525,018,081.91
  5. Step 5: Solve for x
    x = 5,525,018,081.91/72,076.44
  6. Step 6: Final answer
    x = 76,654.98

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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.