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Finding the Fourth Proportional to 91,697.88, 126,543.42 and 53,483.82

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Solution

The fourth proportional to 91,697.88, 126,543.42 and 53,483.82 is: 73,807.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,697.88 : 126,543.42 = 53,483.82 : x
  2. Step 2: Convert to fraction form
    91,697.88/126,543.42 = 53,483.82/x
  3. Step 3: Cross multiply
    91,697.88x = 126,543.42 × 53,483.82
  4. Step 4: Simplify right side
    91,697.88x = 6,768,025,497.46
  5. Step 5: Solve for x
    x = 6,768,025,497.46/91,697.88
  6. Step 6: Final answer
    x = 73,807.87

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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.