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Finding the Fourth Proportional to 101,792.91, 140,382.18 and 63,555.91

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Solution

The fourth proportional to 101,792.91, 140,382.18 and 63,555.91 is: 87,649.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,792.91 : 140,382.18 = 63,555.91 : x
  2. Step 2: Convert to fraction form
    101,792.91/140,382.18 = 63,555.91/x
  3. Step 3: Cross multiply
    101,792.91x = 140,382.18 × 63,555.91
  4. Step 4: Simplify right side
    101,792.91x = 8,922,117,197.68
  5. Step 5: Solve for x
    x = 8,922,117,197.68/101,792.91
  6. Step 6: Final answer
    x = 87,649.69

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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.