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Finding the Fourth Proportional to 107,367.80, 160,857.30 and 91,815.80

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Solution

The fourth proportional to 107,367.80, 160,857.30 and 91,815.80 is: 137,557.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,367.80 : 160,857.30 = 91,815.80 : x
  2. Step 2: Convert to fraction form
    107,367.80/160,857.30 = 91,815.80/x
  3. Step 3: Cross multiply
    107,367.80x = 160,857.30 × 91,815.80
  4. Step 4: Simplify right side
    107,367.80x = 14,769,241,685.34
  5. Step 5: Solve for x
    x = 14,769,241,685.34/107,367.80
  6. Step 6: Final answer
    x = 137,557.46

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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.