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Finding the Fourth Proportional to 108,512.70, 162,817.65 and 49,317.90

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Solution

The fourth proportional to 108,512.70, 162,817.65 and 49,317.90 is: 73,998.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,512.70 : 162,817.65 = 49,317.90 : x
  2. Step 2: Convert to fraction form
    108,512.70/162,817.65 = 49,317.90/x
  3. Step 3: Cross multiply
    108,512.70x = 162,817.65 × 49,317.90
  4. Step 4: Simplify right side
    108,512.70x = 8,029,824,580.94
  5. Step 5: Solve for x
    x = 8,029,824,580.94/108,512.70
  6. Step 6: Final answer
    x = 73,998.94

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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.