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Finding the Fourth Proportional to 21,672.98, 32,506.15 and 6,879.98

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Solution

The fourth proportional to 21,672.98, 32,506.15 and 6,879.98 is: 10,318.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,672.98 : 32,506.15 = 6,879.98 : x
  2. Step 2: Convert to fraction form
    21,672.98/32,506.15 = 6,879.98/x
  3. Step 3: Cross multiply
    21,672.98x = 32,506.15 × 6,879.98
  4. Step 4: Simplify right side
    21,672.98x = 223,641,661.88
  5. Step 5: Solve for x
    x = 223,641,661.88/21,672.98
  6. Step 6: Final answer
    x = 10,318.92

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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.