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Finding the Fourth Proportional to 116,124.96, 174,144.92 and 91,213.51

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Solution

The fourth proportional to 116,124.96, 174,144.92 and 91,213.51 is: 136,786.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,124.96 : 174,144.92 = 91,213.51 : x
  2. Step 2: Convert to fraction form
    116,124.96/174,144.92 = 91,213.51/x
  3. Step 3: Cross multiply
    116,124.96x = 174,144.92 × 91,213.51
  4. Step 4: Simplify right side
    116,124.96x = 15,884,369,401.87
  5. Step 5: Solve for x
    x = 15,884,369,401.87/116,124.96
  6. Step 6: Final answer
    x = 136,786.87

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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.