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Finding the Fourth Proportional to 117,698.90, 162,427.64 and 63,987.52

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Solution

The fourth proportional to 117,698.90, 162,427.64 and 63,987.52 is: 88,304.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,698.90 : 162,427.64 = 63,987.52 : x
  2. Step 2: Convert to fraction form
    117,698.90/162,427.64 = 63,987.52/x
  3. Step 3: Cross multiply
    117,698.90x = 162,427.64 × 63,987.52
  4. Step 4: Simplify right side
    117,698.90x = 10,393,341,863.05
  5. Step 5: Solve for x
    x = 10,393,341,863.05/117,698.90
  6. Step 6: Final answer
    x = 88,304.49

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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.