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Finding the Fourth Proportional to 117,905.96, 162,713.15 and 64,193.92

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Solution

The fourth proportional to 117,905.96, 162,713.15 and 64,193.92 is: 88,589.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,905.96 : 162,713.15 = 64,193.92 : x
  2. Step 2: Convert to fraction form
    117,905.96/162,713.15 = 64,193.92/x
  3. Step 3: Cross multiply
    117,905.96x = 162,713.15 × 64,193.92
  4. Step 4: Simplify right side
    117,905.96x = 10,445,194,206.30
  5. Step 5: Solve for x
    x = 10,445,194,206.30/117,905.96
  6. Step 6: Final answer
    x = 88,589.20

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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.