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Finding the Fourth Proportional to 91,375.63, 126,060.15 and 71,197.47

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Solution

The fourth proportional to 91,375.63, 126,060.15 and 71,197.47 is: 98,222.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,375.63 : 126,060.15 = 71,197.47 : x
  2. Step 2: Convert to fraction form
    91,375.63/126,060.15 = 71,197.47/x
  3. Step 3: Cross multiply
    91,375.63x = 126,060.15 × 71,197.47
  4. Step 4: Simplify right side
    91,375.63x = 8,975,164,014.81
  5. Step 5: Solve for x
    x = 8,975,164,014.81/91,375.63
  6. Step 6: Final answer
    x = 98,222.73

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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.