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Finding the Fourth Proportional to 191,813.52, 264,737.16 and 120,255.60

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Solution

The fourth proportional to 191,813.52, 264,737.16 and 120,255.60 is: 165,974.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,813.52 : 264,737.16 = 120,255.60 : x
  2. Step 2: Convert to fraction form
    191,813.52/264,737.16 = 120,255.60/x
  3. Step 3: Cross multiply
    191,813.52x = 264,737.16 × 120,255.60
  4. Step 4: Simplify right side
    191,813.52x = 31,836,126,018.10
  5. Step 5: Solve for x
    x = 31,836,126,018.10/191,813.52
  6. Step 6: Final answer
    x = 165,974.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.