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Finding the Fourth Proportional to 185,443.92, 255,912.61 and 100,561.05

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Solution

The fourth proportional to 185,443.92, 255,912.61 and 100,561.05 is: 138,774.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,443.92 : 255,912.61 = 100,561.05 : x
  2. Step 2: Convert to fraction form
    185,443.92/255,912.61 = 100,561.05/x
  3. Step 3: Cross multiply
    185,443.92x = 255,912.61 × 100,561.05
  4. Step 4: Simplify right side
    185,443.92x = 25,734,841,563.93
  5. Step 5: Solve for x
    x = 25,734,841,563.93/185,443.92
  6. Step 6: Final answer
    x = 138,774.25

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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.