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Finding the Fourth Proportional to 117,698.94, 162,427.68 and 63,987.57

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Solution

The fourth proportional to 117,698.94, 162,427.68 and 63,987.57 is: 88,304.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,698.94 : 162,427.68 = 63,987.57 : x
  2. Step 2: Convert to fraction form
    117,698.94/162,427.68 = 63,987.57/x
  3. Step 3: Cross multiply
    117,698.94x = 162,427.68 × 63,987.57
  4. Step 4: Simplify right side
    117,698.94x = 10,393,352,543.94
  5. Step 5: Solve for x
    x = 10,393,352,543.94/117,698.94
  6. Step 6: Final answer
    x = 88,304.56

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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.