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Finding the Fourth Proportional to 353,177.91, 530,099.82 and 128,755.26

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Solution

The fourth proportional to 353,177.91, 530,099.82 and 128,755.26 is: 193,254.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,177.91 : 530,099.82 = 128,755.26 : x
  2. Step 2: Convert to fraction form
    353,177.91/530,099.82 = 128,755.26/x
  3. Step 3: Cross multiply
    353,177.91x = 530,099.82 × 128,755.26
  4. Step 4: Simplify right side
    353,177.91x = 68,253,140,150.05
  5. Step 5: Solve for x
    x = 68,253,140,150.05/353,177.91
  6. Step 6: Final answer
    x = 193,254.27

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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.