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Finding the Fourth Proportional to 73,639.71, 101,620.17 and 45,007.28

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Solution

The fourth proportional to 73,639.71, 101,620.17 and 45,007.28 is: 62,108.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,639.71 : 101,620.17 = 45,007.28 : x
  2. Step 2: Convert to fraction form
    73,639.71/101,620.17 = 45,007.28/x
  3. Step 3: Cross multiply
    73,639.71x = 101,620.17 × 45,007.28
  4. Step 4: Simplify right side
    73,639.71x = 4,573,646,936.74
  5. Step 5: Solve for x
    x = 4,573,646,936.74/73,639.71
  6. Step 6: Final answer
    x = 62,108.43

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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.