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Finding the Fourth Proportional to 101,717.61, 140,371.60 and 58,706.05

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Solution

The fourth proportional to 101,717.61, 140,371.60 and 58,706.05 is: 81,015.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,717.61 : 140,371.60 = 58,706.05 : x
  2. Step 2: Convert to fraction form
    101,717.61/140,371.60 = 58,706.05/x
  3. Step 3: Cross multiply
    101,717.61x = 140,371.60 × 58,706.05
  4. Step 4: Simplify right side
    101,717.61x = 8,240,662,168.18
  5. Step 5: Solve for x
    x = 8,240,662,168.18/101,717.61
  6. Step 6: Final answer
    x = 81,015.10

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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.