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Finding the Fourth Proportional to 91,322.92, 125,992.42 and 53,080.50

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Solution

The fourth proportional to 91,322.92, 125,992.42 and 53,080.50 is: 73,231.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,322.92 : 125,992.42 = 53,080.50 : x
  2. Step 2: Convert to fraction form
    91,322.92/125,992.42 = 53,080.50/x
  3. Step 3: Cross multiply
    91,322.92x = 125,992.42 × 53,080.50
  4. Step 4: Simplify right side
    91,322.92x = 6,687,740,649.81
  5. Step 5: Solve for x
    x = 6,687,740,649.81/91,322.92
  6. Step 6: Final answer
    x = 73,231.79

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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.