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Finding the Fourth Proportional to 29,640.42, 40,905.09 and 17,069.22

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Solution

The fourth proportional to 29,640.42, 40,905.09 and 17,069.22 is: 23,556.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,640.42 : 40,905.09 = 17,069.22 : x
  2. Step 2: Convert to fraction form
    29,640.42/40,905.09 = 17,069.22/x
  3. Step 3: Cross multiply
    29,640.42x = 40,905.09 × 17,069.22
  4. Step 4: Simplify right side
    29,640.42x = 698,217,980.33
  5. Step 5: Solve for x
    x = 698,217,980.33/29,640.42
  6. Step 6: Final answer
    x = 23,556.28

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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.