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Finding the Fourth Proportional to 117,959.50, 162,781.68 and 64,245.46

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Solution

The fourth proportional to 117,959.50, 162,781.68 and 64,245.46 is: 88,657.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,959.50 : 162,781.68 = 64,245.46 : x
  2. Step 2: Convert to fraction form
    117,959.50/162,781.68 = 64,245.46/x
  3. Step 3: Cross multiply
    117,959.50x = 162,781.68 × 64,245.46
  4. Step 4: Simplify right side
    117,959.50x = 10,457,983,911.17
  5. Step 5: Solve for x
    x = 10,457,983,911.17/117,959.50
  6. Step 6: Final answer
    x = 88,657.41

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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.