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Finding the Fourth Proportional to 15,046.48, 20,763.88 and 8,331.96

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Solution

The fourth proportional to 15,046.48, 20,763.88 and 8,331.96 is: 11,497.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,046.48 : 20,763.88 = 8,331.96 : x
  2. Step 2: Convert to fraction form
    15,046.48/20,763.88 = 8,331.96/x
  3. Step 3: Cross multiply
    15,046.48x = 20,763.88 × 8,331.96
  4. Step 4: Simplify right side
    15,046.48x = 173,003,828.02
  5. Step 5: Solve for x
    x = 173,003,828.02/15,046.48
  6. Step 6: Final answer
    x = 11,497.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.