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Finding the Fourth Proportional to 66,311.52, 99,468.33 and 36,916.19

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Solution

The fourth proportional to 66,311.52, 99,468.33 and 36,916.19 is: 55,374.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,311.52 : 99,468.33 = 36,916.19 : x
  2. Step 2: Convert to fraction form
    66,311.52/99,468.33 = 36,916.19/x
  3. Step 3: Cross multiply
    66,311.52x = 99,468.33 × 36,916.19
  4. Step 4: Simplify right side
    66,311.52x = 3,671,991,584.68
  5. Step 5: Solve for x
    x = 3,671,991,584.68/66,311.52
  6. Step 6: Final answer
    x = 55,374.87

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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.