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Finding the Fourth Proportional to 73,639.90, 101,620.42 and 45,007.46

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Solution

The fourth proportional to 73,639.90, 101,620.42 and 45,007.46 is: 62,108.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,639.90 : 101,620.42 = 45,007.46 : x
  2. Step 2: Convert to fraction form
    73,639.90/101,620.42 = 45,007.46/x
  3. Step 3: Cross multiply
    73,639.90x = 101,620.42 × 45,007.46
  4. Step 4: Simplify right side
    73,639.90x = 4,573,677,573.57
  5. Step 5: Solve for x
    x = 4,573,677,573.57/73,639.90
  6. Step 6: Final answer
    x = 62,108.69

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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.