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Finding the Fourth Proportional to 108,751.46, 150,068.43 and 65,722.23

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Solution

The fourth proportional to 108,751.46, 150,068.43 and 65,722.23 is: 90,691.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,751.46 : 150,068.43 = 65,722.23 : x
  2. Step 2: Convert to fraction form
    108,751.46/150,068.43 = 65,722.23/x
  3. Step 3: Cross multiply
    108,751.46x = 150,068.43 × 65,722.23
  4. Step 4: Simplify right side
    108,751.46x = 9,862,831,872.20
  5. Step 5: Solve for x
    x = 9,862,831,872.20/108,751.46
  6. Step 6: Final answer
    x = 90,691.49

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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.