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Finding the Fourth Proportional to 109,535.58, 151,163.70 and 61,788.92

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Solution

The fourth proportional to 109,535.58, 151,163.70 and 61,788.92 is: 85,271.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,535.58 : 151,163.70 = 61,788.92 : x
  2. Step 2: Convert to fraction form
    109,535.58/151,163.70 = 61,788.92/x
  3. Step 3: Cross multiply
    109,535.58x = 151,163.70 × 61,788.92
  4. Step 4: Simplify right side
    109,535.58x = 9,340,241,766.20
  5. Step 5: Solve for x
    x = 9,340,241,766.20/109,535.58
  6. Step 6: Final answer
    x = 85,271.30

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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.