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Finding the Fourth Proportional to 19,910.46, 27,475.66 and 10,957.46

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Solution

The fourth proportional to 19,910.46, 27,475.66 and 10,957.46 is: 15,120.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,910.46 : 27,475.66 = 10,957.46 : x
  2. Step 2: Convert to fraction form
    19,910.46/27,475.66 = 10,957.46/x
  3. Step 3: Cross multiply
    19,910.46x = 27,475.66 × 10,957.46
  4. Step 4: Simplify right side
    19,910.46x = 301,063,445.42
  5. Step 5: Solve for x
    x = 301,063,445.42/19,910.46
  6. Step 6: Final answer
    x = 15,120.87

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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.