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Finding the Fourth Proportional to 28,472.08, 42,698.88 and 9,491.68

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Solution

The fourth proportional to 28,472.08, 42,698.88 and 9,491.68 is: 14,234.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,472.08 : 42,698.88 = 9,491.68 : x
  2. Step 2: Convert to fraction form
    28,472.08/42,698.88 = 9,491.68/x
  3. Step 3: Cross multiply
    28,472.08x = 42,698.88 × 9,491.68
  4. Step 4: Simplify right side
    28,472.08x = 405,284,105.32
  5. Step 5: Solve for x
    x = 405,284,105.32/28,472.08
  6. Step 6: Final answer
    x = 14,234.44

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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.