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Finding the Fourth Proportional to 19,951.12, 29,935.77 and 7,472.11

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Solution

The fourth proportional to 19,951.12, 29,935.77 and 7,472.11 is: 11,211.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,951.12 : 29,935.77 = 7,472.11 : x
  2. Step 2: Convert to fraction form
    19,951.12/29,935.77 = 7,472.11/x
  3. Step 3: Cross multiply
    19,951.12x = 29,935.77 × 7,472.11
  4. Step 4: Simplify right side
    19,951.12x = 223,683,216.70
  5. Step 5: Solve for x
    x = 223,683,216.70/19,951.12
  6. Step 6: Final answer
    x = 11,211.56

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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.