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Finding the Fourth Proportional to 111,633.66, 154,053.81 and 60,645.98

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Solution

The fourth proportional to 111,633.66, 154,053.81 and 60,645.98 is: 83,691.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,633.66 : 154,053.81 = 60,645.98 : x
  2. Step 2: Convert to fraction form
    111,633.66/154,053.81 = 60,645.98/x
  3. Step 3: Cross multiply
    111,633.66x = 154,053.81 × 60,645.98
  4. Step 4: Simplify right side
    111,633.66x = 9,342,743,509.91
  5. Step 5: Solve for x
    x = 9,342,743,509.91/111,633.66
  6. Step 6: Final answer
    x = 83,691.10

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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.