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Finding the Fourth Proportional to 191,685.78, 264,527.46 and 111,161.12

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Solution

The fourth proportional to 191,685.78, 264,527.46 and 111,161.12 is: 153,402.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,685.78 : 264,527.46 = 111,161.12 : x
  2. Step 2: Convert to fraction form
    191,685.78/264,527.46 = 111,161.12/x
  3. Step 3: Cross multiply
    191,685.78x = 264,527.46 × 111,161.12
  4. Step 4: Simplify right side
    191,685.78x = 29,405,167,401.72
  5. Step 5: Solve for x
    x = 29,405,167,401.72/191,685.78
  6. Step 6: Final answer
    x = 153,402.97

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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.