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Finding the Fourth Proportional to 527,288.78, 791,067.99 and 153,311.78

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Solution

The fourth proportional to 527,288.78, 791,067.99 and 153,311.78 is: 230,006.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,288.78 : 791,067.99 = 153,311.78 : x
  2. Step 2: Convert to fraction form
    527,288.78/791,067.99 = 153,311.78/x
  3. Step 3: Cross multiply
    527,288.78x = 791,067.99 × 153,311.78
  4. Step 4: Simplify right side
    527,288.78x = 121,280,041,647.92
  5. Step 5: Solve for x
    x = 121,280,041,647.92/527,288.78
  6. Step 6: Final answer
    x = 230,006.87

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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.