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Finding the Fourth Proportional to 108,072.60, 162,032.10 and 48,936.60

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Solution

The fourth proportional to 108,072.60, 162,032.10 and 48,936.60 is: 73,370.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,072.60 : 162,032.10 = 48,936.60 : x
  2. Step 2: Convert to fraction form
    108,072.60/162,032.10 = 48,936.60/x
  3. Step 3: Cross multiply
    108,072.60x = 162,032.10 × 48,936.60
  4. Step 4: Simplify right side
    108,072.60x = 7,929,300,064.86
  5. Step 5: Solve for x
    x = 7,929,300,064.86/108,072.60
  6. Step 6: Final answer
    x = 73,370.12

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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.