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Finding the Fourth Proportional to 55,896.20, 83,868.60 and 28,194.20

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Solution

The fourth proportional to 55,896.20, 83,868.60 and 28,194.20 is: 42,303.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,896.20 : 83,868.60 = 28,194.20 : x
  2. Step 2: Convert to fraction form
    55,896.20/83,868.60 = 28,194.20/x
  3. Step 3: Cross multiply
    55,896.20x = 83,868.60 × 28,194.20
  4. Step 4: Simplify right side
    55,896.20x = 2,364,608,082.12
  5. Step 5: Solve for x
    x = 2,364,608,082.12/55,896.20
  6. Step 6: Final answer
    x = 42,303.56

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1.5x scale

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.