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Finding the Fourth Proportional to 28,576.48, 42,866.77 and 9,856.24

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Solution

The fourth proportional to 28,576.48, 42,866.77 and 9,856.24 is: 14,785.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,576.48 : 42,866.77 = 9,856.24 : x
  2. Step 2: Convert to fraction form
    28,576.48/42,866.77 = 9,856.24/x
  3. Step 3: Cross multiply
    28,576.48x = 42,866.77 × 9,856.24
  4. Step 4: Simplify right side
    28,576.48x = 422,504,909.53
  5. Step 5: Solve for x
    x = 422,504,909.53/28,576.48
  6. Step 6: Final answer
    x = 14,785.06

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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.