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Finding the Fourth Proportional to 191,661.68, 264,494.85 and 105,623.75

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Solution

The fourth proportional to 191,661.68, 264,494.85 and 105,623.75 is: 145,761.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,661.68 : 264,494.85 = 105,623.75 : x
  2. Step 2: Convert to fraction form
    191,661.68/264,494.85 = 105,623.75/x
  3. Step 3: Cross multiply
    191,661.68x = 264,494.85 × 105,623.75
  4. Step 4: Simplify right side
    191,661.68x = 27,936,936,590.21
  5. Step 5: Solve for x
    x = 27,936,936,590.21/191,661.68
  6. Step 6: Final answer
    x = 145,761.73

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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.