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Finding the Fourth Proportional to 111,969.93, 154,511.42 and 61,668.93

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Solution

The fourth proportional to 111,969.93, 154,511.42 and 61,668.93 is: 85,099.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,969.93 : 154,511.42 = 61,668.93 : x
  2. Step 2: Convert to fraction form
    111,969.93/154,511.42 = 61,668.93/x
  3. Step 3: Cross multiply
    111,969.93x = 154,511.42 × 61,668.93
  4. Step 4: Simplify right side
    111,969.93x = 9,528,553,635.84
  5. Step 5: Solve for x
    x = 9,528,553,635.84/111,969.93
  6. Step 6: Final answer
    x = 85,099.22

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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.