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Finding the Fourth Proportional to 117,471.65, 162,112.43 and 63,757.31

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Solution

The fourth proportional to 117,471.65, 162,112.43 and 63,757.31 is: 87,985.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,471.65 : 162,112.43 = 63,757.31 : x
  2. Step 2: Convert to fraction form
    117,471.65/162,112.43 = 63,757.31/x
  3. Step 3: Cross multiply
    117,471.65x = 162,112.43 × 63,757.31
  4. Step 4: Simplify right side
    117,471.65x = 10,335,852,454.36
  5. Step 5: Solve for x
    x = 10,335,852,454.36/117,471.65
  6. Step 6: Final answer
    x = 87,985.93

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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.