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Finding the Fourth Proportional to 19,854.69, 29,900.90 and 18,083.22

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Solution

The fourth proportional to 19,854.69, 29,900.90 and 18,083.22 is: 27,233.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,854.69 : 29,900.90 = 18,083.22 : x
  2. Step 2: Convert to fraction form
    19,854.69/29,900.90 = 18,083.22/x
  3. Step 3: Cross multiply
    19,854.69x = 29,900.90 × 18,083.22
  4. Step 4: Simplify right side
    19,854.69x = 540,704,552.90
  5. Step 5: Solve for x
    x = 540,704,552.90/19,854.69
  6. Step 6: Final answer
    x = 27,233.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.