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Finding the Fourth Proportional to 117,698.91, 162,427.68 and 63,987.54

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Solution

The fourth proportional to 117,698.91, 162,427.68 and 63,987.54 is: 88,304.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,698.91 : 162,427.68 = 63,987.54 : x
  2. Step 2: Convert to fraction form
    117,698.91/162,427.68 = 63,987.54/x
  3. Step 3: Cross multiply
    117,698.91x = 162,427.68 × 63,987.54
  4. Step 4: Simplify right side
    117,698.91x = 10,393,347,671.11
  5. Step 5: Solve for x
    x = 10,393,347,671.11/117,698.91
  6. Step 6: Final answer
    x = 88,304.54

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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.