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Finding the Fourth Proportional to 108,467.51, 162,951.02 and 76,955.81

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Solution

The fourth proportional to 108,467.51, 162,951.02 and 76,955.81 is: 115,610.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,467.51 : 162,951.02 = 76,955.81 : x
  2. Step 2: Convert to fraction form
    108,467.51/162,951.02 = 76,955.81/x
  3. Step 3: Cross multiply
    108,467.51x = 162,951.02 × 76,955.81
  4. Step 4: Simplify right side
    108,467.51x = 12,540,027,734.43
  5. Step 5: Solve for x
    x = 12,540,027,734.43/108,467.51
  6. Step 6: Final answer
    x = 115,610.91

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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.