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Finding the Fourth Proportional to 260,151.92, 390,228.16 and 73,163.52

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Solution

The fourth proportional to 260,151.92, 390,228.16 and 73,163.52 is: 109,745.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,151.92 : 390,228.16 = 73,163.52 : x
  2. Step 2: Convert to fraction form
    260,151.92/390,228.16 = 73,163.52/x
  3. Step 3: Cross multiply
    260,151.92x = 390,228.16 × 73,163.52
  4. Step 4: Simplify right side
    260,151.92x = 28,550,465,788.72
  5. Step 5: Solve for x
    x = 28,550,465,788.72/260,151.92
  6. Step 6: Final answer
    x = 109,745.36

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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.