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Finding the Fourth Proportional to 101,276.44, 151,868.49 and 42,076.78

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Solution

The fourth proportional to 101,276.44, 151,868.49 and 42,076.78 is: 63,095.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,276.44 : 151,868.49 = 42,076.78 : x
  2. Step 2: Convert to fraction form
    101,276.44/151,868.49 = 42,076.78/x
  3. Step 3: Cross multiply
    101,276.44x = 151,868.49 × 42,076.78
  4. Step 4: Simplify right side
    101,276.44x = 6,390,137,042.66
  5. Step 5: Solve for x
    x = 6,390,137,042.66/101,276.44
  6. Step 6: Final answer
    x = 63,095.99

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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.