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Finding the Fourth Proportional to 108,513.70, 162,511.35 and 66,523.30

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Solution

The fourth proportional to 108,513.70, 162,511.35 and 66,523.30 is: 99,626.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,513.70 : 162,511.35 = 66,523.30 : x
  2. Step 2: Convert to fraction form
    108,513.70/162,511.35 = 66,523.30/x
  3. Step 3: Cross multiply
    108,513.70x = 162,511.35 × 66,523.30
  4. Step 4: Simplify right side
    108,513.70x = 10,810,791,289.46
  5. Step 5: Solve for x
    x = 10,810,791,289.46/108,513.70
  6. Step 6: Final answer
    x = 99,626.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.