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Finding the Fourth Proportional to 108,551.16, 162,546.32 and 74,920.96

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Solution

The fourth proportional to 108,551.16, 162,546.32 and 74,920.96 is: 112,187.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,551.16 : 162,546.32 = 74,920.96 : x
  2. Step 2: Convert to fraction form
    108,551.16/162,546.32 = 74,920.96/x
  3. Step 3: Cross multiply
    108,551.16x = 162,546.32 × 74,920.96
  4. Step 4: Simplify right side
    108,551.16x = 12,178,126,338.87
  5. Step 5: Solve for x
    x = 12,178,126,338.87/108,551.16
  6. Step 6: Final answer
    x = 112,187.90

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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.