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Finding the Fourth Proportional to 117,315.92, 161,899.08 and 67,031.12

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Solution

The fourth proportional to 117,315.92, 161,899.08 and 67,031.12 is: 92,504.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,315.92 : 161,899.08 = 67,031.12 : x
  2. Step 2: Convert to fraction form
    117,315.92/161,899.08 = 67,031.12/x
  3. Step 3: Cross multiply
    117,315.92x = 161,899.08 × 67,031.12
  4. Step 4: Simplify right side
    117,315.92x = 10,852,276,659.37
  5. Step 5: Solve for x
    x = 10,852,276,659.37/117,315.92
  6. Step 6: Final answer
    x = 92,504.72

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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.