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Finding the Fourth Proportional to 14,245.92, 21,373.74 and 7,672.77

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Solution

The fourth proportional to 14,245.92, 21,373.74 and 7,672.77 is: 11,511.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,245.92 : 21,373.74 = 7,672.77 : x
  2. Step 2: Convert to fraction form
    14,245.92/21,373.74 = 7,672.77/x
  3. Step 3: Cross multiply
    14,245.92x = 21,373.74 × 7,672.77
  4. Step 4: Simplify right side
    14,245.92x = 163,995,791.06
  5. Step 5: Solve for x
    x = 163,995,791.06/14,245.92
  6. Step 6: Final answer
    x = 11,511.77

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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.