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Finding the Fourth Proportional to 111,894.47, 154,414.37 and 61,593.47

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Solution

The fourth proportional to 111,894.47, 154,414.37 and 61,593.47 is: 84,998.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,894.47 : 154,414.37 = 61,593.47 : x
  2. Step 2: Convert to fraction form
    111,894.47/154,414.37 = 61,593.47/x
  3. Step 3: Cross multiply
    111,894.47x = 154,414.37 × 61,593.47
  4. Step 4: Simplify right side
    111,894.47x = 9,510,916,480.67
  5. Step 5: Solve for x
    x = 9,510,916,480.67/111,894.47
  6. Step 6: Final answer
    x = 84,998.99

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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.