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Finding the Fourth Proportional to 108,722.52, 150,038.52 and 65,696.04

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Solution

The fourth proportional to 108,722.52, 150,038.52 and 65,696.04 is: 90,661.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,722.52 : 150,038.52 = 65,696.04 : x
  2. Step 2: Convert to fraction form
    108,722.52/150,038.52 = 65,696.04/x
  3. Step 3: Cross multiply
    108,722.52x = 150,038.52 × 65,696.04
  4. Step 4: Simplify right side
    108,722.52x = 9,856,936,611.46
  5. Step 5: Solve for x
    x = 9,856,936,611.46/108,722.52
  6. Step 6: Final answer
    x = 90,661.41

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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.