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Finding the Fourth Proportional to 108,447.20, 162,541.20 and 55,829.60

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Solution

The fourth proportional to 108,447.20, 162,541.20 and 55,829.60 is: 83,677.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,447.20 : 162,541.20 = 55,829.60 : x
  2. Step 2: Convert to fraction form
    108,447.20/162,541.20 = 55,829.60/x
  3. Step 3: Cross multiply
    108,447.20x = 162,541.20 × 55,829.60
  4. Step 4: Simplify right side
    108,447.20x = 9,074,610,179.52
  5. Step 5: Solve for x
    x = 9,074,610,179.52/108,447.20
  6. Step 6: Final answer
    x = 83,677.68

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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.