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Finding the Fourth Proportional to 108,563.94, 149,819.55 and 62,612.91

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Solution

The fourth proportional to 108,563.94, 149,819.55 and 62,612.91 is: 86,406.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,563.94 : 149,819.55 = 62,612.91 : x
  2. Step 2: Convert to fraction form
    108,563.94/149,819.55 = 62,612.91/x
  3. Step 3: Cross multiply
    108,563.94x = 149,819.55 × 62,612.91
  4. Step 4: Simplify right side
    108,563.94x = 9,380,638,000.39
  5. Step 5: Solve for x
    x = 9,380,638,000.39/108,563.94
  6. Step 6: Final answer
    x = 86,406.57

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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.