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Finding the Fourth Proportional to 14,042.22, 21,044.69 and 7,454.22

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Solution

The fourth proportional to 14,042.22, 21,044.69 and 7,454.22 is: 11,171.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,042.22 : 21,044.69 = 7,454.22 : x
  2. Step 2: Convert to fraction form
    14,042.22/21,044.69 = 7,454.22/x
  3. Step 3: Cross multiply
    14,042.22x = 21,044.69 × 7,454.22
  4. Step 4: Simplify right side
    14,042.22x = 156,871,749.09
  5. Step 5: Solve for x
    x = 156,871,749.09/14,042.22
  6. Step 6: Final answer
    x = 11,171.44

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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.