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Finding the Fourth Proportional to 29,615.97, 40,871.14 and 16,188.13

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Solution

The fourth proportional to 29,615.97, 40,871.14 and 16,188.13 is: 22,340.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,615.97 : 40,871.14 = 16,188.13 : x
  2. Step 2: Convert to fraction form
    29,615.97/40,871.14 = 16,188.13/x
  3. Step 3: Cross multiply
    29,615.97x = 40,871.14 × 16,188.13
  4. Step 4: Simplify right side
    29,615.97x = 661,627,184.92
  5. Step 5: Solve for x
    x = 661,627,184.92/29,615.97
  6. Step 6: Final answer
    x = 22,340.22

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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.