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Finding the Fourth Proportional to 1,967.87, 2,953.92 and 873.15

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Solution

The fourth proportional to 1,967.87, 2,953.92 and 873.15 is: 1,310.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,967.87 : 2,953.92 = 873.15 : x
  2. Step 2: Convert to fraction form
    1,967.87/2,953.92 = 873.15/x
  3. Step 3: Cross multiply
    1,967.87x = 2,953.92 × 873.15
  4. Step 4: Simplify right side
    1,967.87x = 2,579,215.25
  5. Step 5: Solve for x
    x = 2,579,215.25/1,967.87
  6. Step 6: Final answer
    x = 1,310.67

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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.