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Finding the Fourth Proportional to 117,643.94, 162,348.26 and 63,929.12

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Solution

The fourth proportional to 117,643.94, 162,348.26 and 63,929.12 is: 88,221.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,643.94 : 162,348.26 = 63,929.12 : x
  2. Step 2: Convert to fraction form
    117,643.94/162,348.26 = 63,929.12/x
  3. Step 3: Cross multiply
    117,643.94x = 162,348.26 × 63,929.12
  4. Step 4: Simplify right side
    117,643.94x = 10,378,781,395.33
  5. Step 5: Solve for x
    x = 10,378,781,395.33/117,643.94
  6. Step 6: Final answer
    x = 88,221.98

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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.