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Finding the Fourth Proportional to 113,672.30, 156,867.44 and 65,953.58

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Solution

The fourth proportional to 113,672.30, 156,867.44 and 65,953.58 is: 91,015.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,672.30 : 156,867.44 = 65,953.58 : x
  2. Step 2: Convert to fraction form
    113,672.30/156,867.44 = 65,953.58/x
  3. Step 3: Cross multiply
    113,672.30x = 156,867.44 × 65,953.58
  4. Step 4: Simplify right side
    113,672.30x = 10,345,969,253.44
  5. Step 5: Solve for x
    x = 10,345,969,253.44/113,672.30
  6. Step 6: Final answer
    x = 91,015.75

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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.