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Finding the Fourth Proportional to 13,203.92, 19,723.78 and 10,611.92

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Solution

The fourth proportional to 13,203.92, 19,723.78 and 10,611.92 is: 15,851.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,203.92 : 19,723.78 = 10,611.92 : x
  2. Step 2: Convert to fraction form
    13,203.92/19,723.78 = 10,611.92/x
  3. Step 3: Cross multiply
    13,203.92x = 19,723.78 × 10,611.92
  4. Step 4: Simplify right side
    13,203.92x = 209,307,175.46
  5. Step 5: Solve for x
    x = 209,307,175.46/13,203.92
  6. Step 6: Final answer
    x = 15,851.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.