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Finding the Fourth Proportional to 108,063.20, 161,979.60 and 41,477.60

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Solution

The fourth proportional to 108,063.20, 161,979.60 and 41,477.60 is: 62,172.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,063.20 : 161,979.60 = 41,477.60 : x
  2. Step 2: Convert to fraction form
    108,063.20/161,979.60 = 41,477.60/x
  3. Step 3: Cross multiply
    108,063.20x = 161,979.60 × 41,477.60
  4. Step 4: Simplify right side
    108,063.20x = 6,718,525,056.96
  5. Step 5: Solve for x
    x = 6,718,525,056.96/108,063.20
  6. Step 6: Final answer
    x = 62,172.18

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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.