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Finding the Fourth Proportional to 11,205.59, 16,800.59 and 4,962.21

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Solution

The fourth proportional to 11,205.59, 16,800.59 and 4,962.21 is: 7,439.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,205.59 : 16,800.59 = 4,962.21 : x
  2. Step 2: Convert to fraction form
    11,205.59/16,800.59 = 4,962.21/x
  3. Step 3: Cross multiply
    11,205.59x = 16,800.59 × 4,962.21
  4. Step 4: Simplify right side
    11,205.59x = 83,368,085.65
  5. Step 5: Solve for x
    x = 83,368,085.65/11,205.59
  6. Step 6: Final answer
    x = 7,439.87

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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.