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Finding the Fourth Proportional to 110,558.40, 165,801.15 and 40,428.60

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Solution

The fourth proportional to 110,558.40, 165,801.15 and 40,428.60 is: 60,629.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,558.40 : 165,801.15 = 40,428.60 : x
  2. Step 2: Convert to fraction form
    110,558.40/165,801.15 = 40,428.60/x
  3. Step 3: Cross multiply
    110,558.40x = 165,801.15 × 40,428.60
  4. Step 4: Simplify right side
    110,558.40x = 6,703,108,372.89
  5. Step 5: Solve for x
    x = 6,703,108,372.89/110,558.40
  6. Step 6: Final answer
    x = 60,629.57

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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.