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Finding the Fourth Proportional to 28,558.31, 42,836.17 and 7,497.85

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Solution

The fourth proportional to 28,558.31, 42,836.17 and 7,497.85 is: 11,246.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,558.31 : 42,836.17 = 7,497.85 : x
  2. Step 2: Convert to fraction form
    28,558.31/42,836.17 = 7,497.85/x
  3. Step 3: Cross multiply
    28,558.31x = 42,836.17 × 7,497.85
  4. Step 4: Simplify right side
    28,558.31x = 321,179,124.69
  5. Step 5: Solve for x
    x = 321,179,124.69/28,558.31
  6. Step 6: Final answer
    x = 11,246.44

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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.