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Finding the Fourth Proportional to 111,781, 154,179.66 and 73,528.48

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Solution

The fourth proportional to 111,781, 154,179.66 and 73,528.48 is: 101,417.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,781 : 154,179.66 = 73,528.48 : x
  2. Step 2: Convert to fraction form
    111,781/154,179.66 = 73,528.48/x
  3. Step 3: Cross multiply
    111,781x = 154,179.66 × 73,528.48
  4. Step 4: Simplify right side
    111,781x = 11,336,596,046.72
  5. Step 5: Solve for x
    x = 11,336,596,046.72/111,781
  6. Step 6: Final answer
    x = 101,417.92

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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.