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Finding the Fourth Proportional to 19,950.48, 29,930.85 and 7,471.47

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Solution

The fourth proportional to 19,950.48, 29,930.85 and 7,471.47 is: 11,209.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,950.48 : 29,930.85 = 7,471.47 : x
  2. Step 2: Convert to fraction form
    19,950.48/29,930.85 = 7,471.47/x
  3. Step 3: Cross multiply
    19,950.48x = 29,930.85 × 7,471.47
  4. Step 4: Simplify right side
    19,950.48x = 223,627,447.85
  5. Step 5: Solve for x
    x = 223,627,447.85/19,950.48
  6. Step 6: Final answer
    x = 11,209.13

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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.