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Finding the Fourth Proportional to 124,301.94, 186,380.91 and 84,906.66

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Solution

The fourth proportional to 124,301.94, 186,380.91 and 84,906.66 is: 127,310.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,301.94 : 186,380.91 = 84,906.66 : x
  2. Step 2: Convert to fraction form
    124,301.94/186,380.91 = 84,906.66/x
  3. Step 3: Cross multiply
    124,301.94x = 186,380.91 × 84,906.66
  4. Step 4: Simplify right side
    124,301.94x = 15,824,980,555.86
  5. Step 5: Solve for x
    x = 15,824,980,555.86/124,301.94
  6. Step 6: Final answer
    x = 127,310.81

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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.