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Finding the Fourth Proportional to 317,219.21, 475,856.76 and 89,516.85

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Solution

The fourth proportional to 317,219.21, 475,856.76 and 89,516.85 is: 134,283.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,219.21 : 475,856.76 = 89,516.85 : x
  2. Step 2: Convert to fraction form
    317,219.21/475,856.76 = 89,516.85/x
  3. Step 3: Cross multiply
    317,219.21x = 475,856.76 × 89,516.85
  4. Step 4: Simplify right side
    317,219.21x = 42,597,198,206.41
  5. Step 5: Solve for x
    x = 42,597,198,206.41/317,219.21
  6. Step 6: Final answer
    x = 134,283.16

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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.