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Finding the Fourth Proportional to 20,000.76, 27,600.52 and 11,048.07

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Solution

The fourth proportional to 20,000.76, 27,600.52 and 11,048.07 is: 15,246.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,000.76 : 27,600.52 = 11,048.07 : x
  2. Step 2: Convert to fraction form
    20,000.76/27,600.52 = 11,048.07/x
  3. Step 3: Cross multiply
    20,000.76x = 27,600.52 × 11,048.07
  4. Step 4: Simplify right side
    20,000.76x = 304,932,477.00
  5. Step 5: Solve for x
    x = 304,932,477.00/20,000.76
  6. Step 6: Final answer
    x = 15,246.04

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Half scale
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Double scale
Find fourth proportional to 20,001.76, 27,601.90 and 11,049.07
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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.