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Finding the Fourth Proportional to 117,979.05, 176,820.87 and 92,920.14

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Solution

The fourth proportional to 117,979.05, 176,820.87 and 92,920.14 is: 139,263.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,979.05 : 176,820.87 = 92,920.14 : x
  2. Step 2: Convert to fraction form
    117,979.05/176,820.87 = 92,920.14/x
  3. Step 3: Cross multiply
    117,979.05x = 176,820.87 × 92,920.14
  4. Step 4: Simplify right side
    117,979.05x = 16,430,219,995.32
  5. Step 5: Solve for x
    x = 16,430,219,995.32/117,979.05
  6. Step 6: Final answer
    x = 139,263.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.