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Finding the Fourth Proportional to 189,658, 284,626.94 and 89,818

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Solution

The fourth proportional to 189,658, 284,626.94 and 89,818 is: 134,793.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,658 : 284,626.94 = 89,818 : x
  2. Step 2: Convert to fraction form
    189,658/284,626.94 = 89,818/x
  3. Step 3: Cross multiply
    189,658x = 284,626.94 × 89,818
  4. Step 4: Simplify right side
    189,658x = 25,564,622,496.92
  5. Step 5: Solve for x
    x = 25,564,622,496.92/189,658
  6. Step 6: Final answer
    x = 134,793.27

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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.