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Finding the Fourth Proportional to 30,591.35, 45,903.74 and 11,872.11

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Solution

The fourth proportional to 30,591.35, 45,903.74 and 11,872.11 is: 17,814.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,591.35 : 45,903.74 = 11,872.11 : x
  2. Step 2: Convert to fraction form
    30,591.35/45,903.74 = 11,872.11/x
  3. Step 3: Cross multiply
    30,591.35x = 45,903.74 × 11,872.11
  4. Step 4: Simplify right side
    30,591.35x = 544,974,363.47
  5. Step 5: Solve for x
    x = 544,974,363.47/30,591.35
  6. Step 6: Final answer
    x = 17,814.66

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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.