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Finding the Fourth Proportional to 66,372.70, 99,325.02 and 41,424.40

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Solution

The fourth proportional to 66,372.70, 99,325.02 and 41,424.40 is: 61,990.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,372.70 : 99,325.02 = 41,424.40 : x
  2. Step 2: Convert to fraction form
    66,372.70/99,325.02 = 41,424.40/x
  3. Step 3: Cross multiply
    66,372.70x = 99,325.02 × 41,424.40
  4. Step 4: Simplify right side
    66,372.70x = 4,114,479,358.49
  5. Step 5: Solve for x
    x = 4,114,479,358.49/66,372.70
  6. Step 6: Final answer
    x = 61,990.54

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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.