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Finding the Fourth Proportional to 191,917.53, 264,859.17 and 111,345.09

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Solution

The fourth proportional to 191,917.53, 264,859.17 and 111,345.09 is: 153,663.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,917.53 : 264,859.17 = 111,345.09 : x
  2. Step 2: Convert to fraction form
    191,917.53/264,859.17 = 111,345.09/x
  3. Step 3: Cross multiply
    191,917.53x = 264,859.17 × 111,345.09
  4. Step 4: Simplify right side
    191,917.53x = 29,490,768,120.98
  5. Step 5: Solve for x
    x = 29,490,768,120.98/191,917.53
  6. Step 6: Final answer
    x = 153,663.75

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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.