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Finding the Fourth Proportional to 117,905.33, 162,656.79 and 79,652.58

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Solution

The fourth proportional to 117,905.33, 162,656.79 and 79,652.58 is: 109,885.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,905.33 : 162,656.79 = 79,652.58 : x
  2. Step 2: Convert to fraction form
    117,905.33/162,656.79 = 79,652.58/x
  3. Step 3: Cross multiply
    117,905.33x = 162,656.79 × 79,652.58
  4. Step 4: Simplify right side
    117,905.33x = 12,956,032,517.40
  5. Step 5: Solve for x
    x = 12,956,032,517.40/117,905.33
  6. Step 6: Final answer
    x = 109,885.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.