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Finding the Fourth Proportional to 19,245.74, 28,868.30 and 15,951.87

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Solution

The fourth proportional to 19,245.74, 28,868.30 and 15,951.87 is: 23,927.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,245.74 : 28,868.30 = 15,951.87 : x
  2. Step 2: Convert to fraction form
    19,245.74/28,868.30 = 15,951.87/x
  3. Step 3: Cross multiply
    19,245.74x = 28,868.30 × 15,951.87
  4. Step 4: Simplify right side
    19,245.74x = 460,503,288.96
  5. Step 5: Solve for x
    x = 460,503,288.96/19,245.74
  6. Step 6: Final answer
    x = 23,927.55

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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.