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Finding the Fourth Proportional to 11,149.80, 16,724.70 and 4,580.70

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Solution

The fourth proportional to 11,149.80, 16,724.70 and 4,580.70 is: 6,871.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,149.80 : 16,724.70 = 4,580.70 : x
  2. Step 2: Convert to fraction form
    11,149.80/16,724.70 = 4,580.70/x
  3. Step 3: Cross multiply
    11,149.80x = 16,724.70 × 4,580.70
  4. Step 4: Simplify right side
    11,149.80x = 76,610,833.29
  5. Step 5: Solve for x
    x = 76,610,833.29/11,149.80
  6. Step 6: Final answer
    x = 6,871.05

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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.