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Finding the Fourth Proportional to 101,183.98, 139,638.57 and 55,868.40

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Solution

The fourth proportional to 101,183.98, 139,638.57 and 55,868.40 is: 77,100.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,183.98 : 139,638.57 = 55,868.40 : x
  2. Step 2: Convert to fraction form
    101,183.98/139,638.57 = 55,868.40/x
  3. Step 3: Cross multiply
    101,183.98x = 139,638.57 × 55,868.40
  4. Step 4: Simplify right side
    101,183.98x = 7,801,382,506.65
  5. Step 5: Solve for x
    x = 7,801,382,506.65/101,183.98
  6. Step 6: Final answer
    x = 77,100.97

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1.5x scale

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.