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Finding the Fourth Proportional to 19,999.70, 27,600.76 and 12,044.50

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Solution

The fourth proportional to 19,999.70, 27,600.76 and 12,044.50 is: 16,622.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,999.70 : 27,600.76 = 12,044.50 : x
  2. Step 2: Convert to fraction form
    19,999.70/27,600.76 = 12,044.50/x
  3. Step 3: Cross multiply
    19,999.70x = 27,600.76 × 12,044.50
  4. Step 4: Simplify right side
    19,999.70x = 332,437,353.82
  5. Step 5: Solve for x
    x = 332,437,353.82/19,999.70
  6. Step 6: Final answer
    x = 16,622.12

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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.