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Finding the Fourth Proportional to 107,809.20, 161,713.80 and 92,062.80

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Solution

The fourth proportional to 107,809.20, 161,713.80 and 92,062.80 is: 138,094.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,809.20 : 161,713.80 = 92,062.80 : x
  2. Step 2: Convert to fraction form
    107,809.20/161,713.80 = 92,062.80/x
  3. Step 3: Cross multiply
    107,809.20x = 161,713.80 × 92,062.80
  4. Step 4: Simplify right side
    107,809.20x = 14,887,825,226.64
  5. Step 5: Solve for x
    x = 14,887,825,226.64/107,809.20
  6. Step 6: Final answer
    x = 138,094.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.