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Finding the Fourth Proportional to 203,641.29, 305,446.56 and 83,665.55

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Solution

The fourth proportional to 203,641.29, 305,446.56 and 83,665.55 is: 125,492.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,641.29 : 305,446.56 = 83,665.55 : x
  2. Step 2: Convert to fraction form
    203,641.29/305,446.56 = 83,665.55/x
  3. Step 3: Cross multiply
    203,641.29x = 305,446.56 × 83,665.55
  4. Step 4: Simplify right side
    203,641.29x = 25,555,354,438.01
  5. Step 5: Solve for x
    x = 25,555,354,438.01/203,641.29
  6. Step 6: Final answer
    x = 125,492.01

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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.