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Finding the Fourth Proportional to 29,615.21, 40,868.84 and 17,520.03

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Solution

The fourth proportional to 29,615.21, 40,868.84 and 17,520.03 is: 24,177.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,615.21 : 40,868.84 = 17,520.03 : x
  2. Step 2: Convert to fraction form
    29,615.21/40,868.84 = 17,520.03/x
  3. Step 3: Cross multiply
    29,615.21x = 40,868.84 × 17,520.03
  4. Step 4: Simplify right side
    29,615.21x = 716,023,215.27
  5. Step 5: Solve for x
    x = 716,023,215.27/29,615.21
  6. Step 6: Final answer
    x = 24,177.55

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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.