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Finding the Fourth Proportional to 19,709.55, 29,585.39 and 10,942.11

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Solution

The fourth proportional to 19,709.55, 29,585.39 and 10,942.11 is: 16,424.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,709.55 : 29,585.39 = 10,942.11 : x
  2. Step 2: Convert to fraction form
    19,709.55/29,585.39 = 10,942.11/x
  3. Step 3: Cross multiply
    19,709.55x = 29,585.39 × 10,942.11
  4. Step 4: Simplify right side
    19,709.55x = 323,726,537.06
  5. Step 5: Solve for x
    x = 323,726,537.06/19,709.55
  6. Step 6: Final answer
    x = 16,424.86

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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.