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Finding the Fourth Proportional to 117,471.70, 162,106.83 and 63,755.64

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Solution

The fourth proportional to 117,471.70, 162,106.83 and 63,755.64 is: 87,980.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,471.70 : 162,106.83 = 63,755.64 : x
  2. Step 2: Convert to fraction form
    117,471.70/162,106.83 = 63,755.64/x
  3. Step 3: Cross multiply
    117,471.70x = 162,106.83 × 63,755.64
  4. Step 4: Simplify right side
    117,471.70x = 10,335,224,695.02
  5. Step 5: Solve for x
    x = 10,335,224,695.02/117,471.70
  6. Step 6: Final answer
    x = 87,980.55

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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.