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Finding the Fourth Proportional to 29,640.96, 40,903.92 and 17,065.80

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Solution

The fourth proportional to 29,640.96, 40,903.92 and 17,065.80 is: 23,550.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,640.96 : 40,903.92 = 17,065.80 : x
  2. Step 2: Convert to fraction form
    29,640.96/40,903.92 = 17,065.80/x
  3. Step 3: Cross multiply
    29,640.96x = 40,903.92 × 17,065.80
  4. Step 4: Simplify right side
    29,640.96x = 698,058,117.94
  5. Step 5: Solve for x
    x = 698,058,117.94/29,640.96
  6. Step 6: Final answer
    x = 23,550.46

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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.