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Finding the Fourth Proportional to 516,745.19, 775,067.65 and 156,919.14

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Solution

The fourth proportional to 516,745.19, 775,067.65 and 156,919.14 is: 235,363.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,745.19 : 775,067.65 = 156,919.14 : x
  2. Step 2: Convert to fraction form
    516,745.19/775,067.65 = 156,919.14/x
  3. Step 3: Cross multiply
    516,745.19x = 775,067.65 × 156,919.14
  4. Step 4: Simplify right side
    516,745.19x = 121,622,949,079.82
  5. Step 5: Solve for x
    x = 121,622,949,079.82/516,745.19
  6. Step 6: Final answer
    x = 235,363.49

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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.