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Finding the Fourth Proportional to 29,615.55, 40,868.76 and 16,186.89

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Solution

The fourth proportional to 29,615.55, 40,868.76 and 16,186.89 is: 22,337.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,615.55 : 40,868.76 = 16,186.89 : x
  2. Step 2: Convert to fraction form
    29,615.55/40,868.76 = 16,186.89/x
  3. Step 3: Cross multiply
    29,615.55x = 40,868.76 × 16,186.89
  4. Step 4: Simplify right side
    29,615.55x = 661,538,122.56
  5. Step 5: Solve for x
    x = 661,538,122.56/29,615.55
  6. Step 6: Final answer
    x = 22,337.53

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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.