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Finding the Fourth Proportional to 29,642.92, 40,908.54 and 17,071.72

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Solution

The fourth proportional to 29,642.92, 40,908.54 and 17,071.72 is: 23,559.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,642.92 : 40,908.54 = 17,071.72 : x
  2. Step 2: Convert to fraction form
    29,642.92/40,908.54 = 17,071.72/x
  3. Step 3: Cross multiply
    29,642.92x = 40,908.54 × 17,071.72
  4. Step 4: Simplify right side
    29,642.92x = 698,379,140.49
  5. Step 5: Solve for x
    x = 698,379,140.49/29,642.92
  6. Step 6: Final answer
    x = 23,559.73

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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.