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Finding the Fourth Proportional to 29,297.82, 40,430.81 and 15,868.97

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Solution

The fourth proportional to 29,297.82, 40,430.81 and 15,868.97 is: 21,899.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,297.82 : 40,430.81 = 15,868.97 : x
  2. Step 2: Convert to fraction form
    29,297.82/40,430.81 = 15,868.97/x
  3. Step 3: Cross multiply
    29,297.82x = 40,430.81 × 15,868.97
  4. Step 4: Simplify right side
    29,297.82x = 641,595,310.97
  5. Step 5: Solve for x
    x = 641,595,310.97/29,297.82
  6. Step 6: Final answer
    x = 21,899.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.