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Finding the Fourth Proportional to 4,620.92, 6,934.52 and 2,155.99

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Solution

The fourth proportional to 4,620.92, 6,934.52 and 2,155.99 is: 3,235.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,620.92 : 6,934.52 = 2,155.99 : x
  2. Step 2: Convert to fraction form
    4,620.92/6,934.52 = 2,155.99/x
  3. Step 3: Cross multiply
    4,620.92x = 6,934.52 × 2,155.99
  4. Step 4: Simplify right side
    4,620.92x = 14,950,755.77
  5. Step 5: Solve for x
    x = 14,950,755.77/4,620.92
  6. Step 6: Final answer
    x = 3,235.45

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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.