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Finding the Fourth Proportional to 29,641.96, 40,918.50 and 18,469.48

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Solution

The fourth proportional to 29,641.96, 40,918.50 and 18,469.48 is: 25,495.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,641.96 : 40,918.50 = 18,469.48 : x
  2. Step 2: Convert to fraction form
    29,641.96/40,918.50 = 18,469.48/x
  3. Step 3: Cross multiply
    29,641.96x = 40,918.50 × 18,469.48
  4. Step 4: Simplify right side
    29,641.96x = 755,743,417.38
  5. Step 5: Solve for x
    x = 755,743,417.38/29,641.96
  6. Step 6: Final answer
    x = 25,495.73

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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.