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Finding the Fourth Proportional to 19,957.36, 29,936.94 and 7,474.16

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Solution

The fourth proportional to 19,957.36, 29,936.94 and 7,474.16 is: 11,211.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,957.36 : 29,936.94 = 7,474.16 : x
  2. Step 2: Convert to fraction form
    19,957.36/29,936.94 = 7,474.16/x
  3. Step 3: Cross multiply
    19,957.36x = 29,936.94 × 7,474.16
  4. Step 4: Simplify right side
    19,957.36x = 223,753,479.47
  5. Step 5: Solve for x
    x = 223,753,479.47/19,957.36
  6. Step 6: Final answer
    x = 11,211.58

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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.