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Finding the Fourth Proportional to 15,937.16, 23,920.92 and 7,621.70

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Solution

The fourth proportional to 15,937.16, 23,920.92 and 7,621.70 is: 11,439.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,937.16 : 23,920.92 = 7,621.70 : x
  2. Step 2: Convert to fraction form
    15,937.16/23,920.92 = 7,621.70/x
  3. Step 3: Cross multiply
    15,937.16x = 23,920.92 × 7,621.70
  4. Step 4: Simplify right side
    15,937.16x = 182,317,956.36
  5. Step 5: Solve for x
    x = 182,317,956.36/15,937.16
  6. Step 6: Final answer
    x = 11,439.81

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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.