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Finding the Fourth Proportional to 111,696.47, 154,141.13 and 61,395.47

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Solution

The fourth proportional to 111,696.47, 154,141.13 and 61,395.47 is: 84,725.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,696.47 : 154,141.13 = 61,395.47 : x
  2. Step 2: Convert to fraction form
    111,696.47/154,141.13 = 61,395.47/x
  3. Step 3: Cross multiply
    111,696.47x = 154,141.13 × 61,395.47
  4. Step 4: Simplify right side
    111,696.47x = 9,463,566,738.14
  5. Step 5: Solve for x
    x = 9,463,566,738.14/111,696.47
  6. Step 6: Final answer
    x = 84,725.75

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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.