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Finding the Fourth Proportional to 15,797.72, 23,679.74 and 11,890.04

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Solution

The fourth proportional to 15,797.72, 23,679.74 and 11,890.04 is: 17,822.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,797.72 : 23,679.74 = 11,890.04 : x
  2. Step 2: Convert to fraction form
    15,797.72/23,679.74 = 11,890.04/x
  3. Step 3: Cross multiply
    15,797.72x = 23,679.74 × 11,890.04
  4. Step 4: Simplify right side
    15,797.72x = 281,553,055.79
  5. Step 5: Solve for x
    x = 281,553,055.79/15,797.72
  6. Step 6: Final answer
    x = 17,822.39

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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.