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Finding the Fourth Proportional to 28,576.73, 42,867.92 and 9,854.30

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Solution

The fourth proportional to 28,576.73, 42,867.92 and 9,854.30 is: 14,782.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,576.73 : 42,867.92 = 9,854.30 : x
  2. Step 2: Convert to fraction form
    28,576.73/42,867.92 = 9,854.30/x
  3. Step 3: Cross multiply
    28,576.73x = 42,867.92 × 9,854.30
  4. Step 4: Simplify right side
    28,576.73x = 422,433,475.86
  5. Step 5: Solve for x
    x = 422,433,475.86/28,576.73
  6. Step 6: Final answer
    x = 14,782.43

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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.