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Finding the Fourth Proportional to 117,327.94, 161,910.57 and 66,339.88

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Solution

The fourth proportional to 117,327.94, 161,910.57 and 66,339.88 is: 91,547.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,327.94 : 161,910.57 = 66,339.88 : x
  2. Step 2: Convert to fraction form
    117,327.94/161,910.57 = 66,339.88/x
  3. Step 3: Cross multiply
    117,327.94x = 161,910.57 × 66,339.88
  4. Step 4: Simplify right side
    117,327.94x = 10,741,127,784.53
  5. Step 5: Solve for x
    x = 10,741,127,784.53/117,327.94
  6. Step 6: Final answer
    x = 91,547.91

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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.