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Finding the Fourth Proportional to 11,220.52, 16,830.76 and 3,012.52

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Solution

The fourth proportional to 11,220.52, 16,830.76 and 3,012.52 is: 4,518.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,220.52 : 16,830.76 = 3,012.52 : x
  2. Step 2: Convert to fraction form
    11,220.52/16,830.76 = 3,012.52/x
  3. Step 3: Cross multiply
    11,220.52x = 16,830.76 × 3,012.52
  4. Step 4: Simplify right side
    11,220.52x = 50,703,001.12
  5. Step 5: Solve for x
    x = 50,703,001.12/11,220.52
  6. Step 6: Final answer
    x = 4,518.77

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Double scale
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Similar ratio
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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.