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Finding the Fourth Proportional to 108,420.40, 162,654.90 and 41,854.60

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Solution

The fourth proportional to 108,420.40, 162,654.90 and 41,854.60 is: 62,791.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,420.40 : 162,654.90 = 41,854.60 : x
  2. Step 2: Convert to fraction form
    108,420.40/162,654.90 = 41,854.60/x
  3. Step 3: Cross multiply
    108,420.40x = 162,654.90 × 41,854.60
  4. Step 4: Simplify right side
    108,420.40x = 6,807,855,777.54
  5. Step 5: Solve for x
    x = 6,807,855,777.54/108,420.40
  6. Step 6: Final answer
    x = 62,791.28

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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.