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Finding the Fourth Proportional to 101,506.87, 140,047.28 and 59,057.20

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Solution

The fourth proportional to 101,506.87, 140,047.28 and 59,057.20 is: 81,480.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,506.87 : 140,047.28 = 59,057.20 : x
  2. Step 2: Convert to fraction form
    101,506.87/140,047.28 = 59,057.20/x
  3. Step 3: Cross multiply
    101,506.87x = 140,047.28 × 59,057.20
  4. Step 4: Simplify right side
    101,506.87x = 8,270,800,325.65
  5. Step 5: Solve for x
    x = 8,270,800,325.65/101,506.87
  6. Step 6: Final answer
    x = 81,480.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.