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Finding the Fourth Proportional to 12,480.30, 18,709.51 and 4,694.58

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Solution

The fourth proportional to 12,480.30, 18,709.51 and 4,694.58 is: 7,037.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480.30 : 18,709.51 = 4,694.58 : x
  2. Step 2: Convert to fraction form
    12,480.30/18,709.51 = 4,694.58/x
  3. Step 3: Cross multiply
    12,480.30x = 18,709.51 × 4,694.58
  4. Step 4: Simplify right side
    12,480.30x = 87,833,267.98
  5. Step 5: Solve for x
    x = 87,833,267.98/12,480.30
  6. Step 6: Final answer
    x = 7,037.75

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.