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Finding the Fourth Proportional to 203,589.81, 305,387.06 and 61,436.32

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Solution

The fourth proportional to 203,589.81, 305,387.06 and 61,436.32 is: 92,155.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,589.81 : 305,387.06 = 61,436.32 : x
  2. Step 2: Convert to fraction form
    203,589.81/305,387.06 = 61,436.32/x
  3. Step 3: Cross multiply
    203,589.81x = 305,387.06 × 61,436.32
  4. Step 4: Simplify right side
    203,589.81x = 18,761,855,768.67
  5. Step 5: Solve for x
    x = 18,761,855,768.67/203,589.81
  6. Step 6: Final answer
    x = 92,155.18

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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.