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Finding the Fourth Proportional to 22,109.44, 30,509.76 and 12,173.44

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Solution

The fourth proportional to 22,109.44, 30,509.76 and 12,173.44 is: 16,798.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,109.44 : 30,509.76 = 12,173.44 : x
  2. Step 2: Convert to fraction form
    22,109.44/30,509.76 = 12,173.44/x
  3. Step 3: Cross multiply
    22,109.44x = 30,509.76 × 12,173.44
  4. Step 4: Simplify right side
    22,109.44x = 371,408,732.77
  5. Step 5: Solve for x
    x = 371,408,732.77/22,109.44
  6. Step 6: Final answer
    x = 16,798.65

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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.