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Finding the Fourth Proportional to 101,140.88, 151,718.60 and 38,811.38

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Solution

The fourth proportional to 101,140.88, 151,718.60 and 38,811.38 is: 58,219.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,140.88 : 151,718.60 = 38,811.38 : x
  2. Step 2: Convert to fraction form
    101,140.88/151,718.60 = 38,811.38/x
  3. Step 3: Cross multiply
    101,140.88x = 151,718.60 × 38,811.38
  4. Step 4: Simplify right side
    101,140.88x = 5,888,407,576.10
  5. Step 5: Solve for x
    x = 5,888,407,576.10/101,140.88
  6. Step 6: Final answer
    x = 58,219.86

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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.