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Finding the Fourth Proportional to 7,457.32, 11,185.72 and 1,910.71

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Solution

The fourth proportional to 7,457.32, 11,185.72 and 1,910.71 is: 2,865.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,457.32 : 11,185.72 = 1,910.71 : x
  2. Step 2: Convert to fraction form
    7,457.32/11,185.72 = 1,910.71/x
  3. Step 3: Cross multiply
    7,457.32x = 11,185.72 × 1,910.71
  4. Step 4: Simplify right side
    7,457.32x = 21,372,601.58
  5. Step 5: Solve for x
    x = 21,372,601.58/7,457.32
  6. Step 6: Final answer
    x = 2,865.99

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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.