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Finding the Fourth Proportional to 108,475.20, 162,583.20 and 55,857.60

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Solution

The fourth proportional to 108,475.20, 162,583.20 and 55,857.60 is: 83,719.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,475.20 : 162,583.20 = 55,857.60 : x
  2. Step 2: Convert to fraction form
    108,475.20/162,583.20 = 55,857.60/x
  3. Step 3: Cross multiply
    108,475.20x = 162,583.20 × 55,857.60
  4. Step 4: Simplify right side
    108,475.20x = 9,081,507,352.32
  5. Step 5: Solve for x
    x = 9,081,507,352.32/108,475.20
  6. Step 6: Final answer
    x = 83,719.66

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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.