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Finding the Fourth Proportional to 19,253.55, 28,879.92 and 8,865.30

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Solution

The fourth proportional to 19,253.55, 28,879.92 and 8,865.30 is: 13,297.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,253.55 : 28,879.92 = 8,865.30 : x
  2. Step 2: Convert to fraction form
    19,253.55/28,879.92 = 8,865.30/x
  3. Step 3: Cross multiply
    19,253.55x = 28,879.92 × 8,865.30
  4. Step 4: Simplify right side
    19,253.55x = 256,029,154.78
  5. Step 5: Solve for x
    x = 256,029,154.78/19,253.55
  6. Step 6: Final answer
    x = 13,297.76

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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.