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Finding the Fourth Proportional to 354,037.37, 530,583.11 and 129,186.43

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Solution

The fourth proportional to 354,037.37, 530,583.11 and 129,186.43 is: 193,607.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,037.37 : 530,583.11 = 129,186.43 : x
  2. Step 2: Convert to fraction form
    354,037.37/530,583.11 = 129,186.43/x
  3. Step 3: Cross multiply
    354,037.37x = 530,583.11 × 129,186.43
  4. Step 4: Simplify right side
    354,037.37x = 68,544,136,311.26
  5. Step 5: Solve for x
    x = 68,544,136,311.26/354,037.37
  6. Step 6: Final answer
    x = 193,607.07

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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.