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Finding the Fourth Proportional to 29,115, 40,185.18 and 18,502.56

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Solution

The fourth proportional to 29,115, 40,185.18 and 18,502.56 is: 25,537.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,115 : 40,185.18 = 18,502.56 : x
  2. Step 2: Convert to fraction form
    29,115/40,185.18 = 18,502.56/x
  3. Step 3: Cross multiply
    29,115x = 40,185.18 × 18,502.56
  4. Step 4: Simplify right side
    29,115x = 743,528,704.06
  5. Step 5: Solve for x
    x = 743,528,704.06/29,115
  6. Step 6: Final answer
    x = 25,537.65

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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.