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Finding the Fourth Proportional to 118,403.44, 163,396.74 and 68,102.44

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Solution

The fourth proportional to 118,403.44, 163,396.74 and 68,102.44 is: 93,981.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,403.44 : 163,396.74 = 68,102.44 : x
  2. Step 2: Convert to fraction form
    118,403.44/163,396.74 = 68,102.44/x
  3. Step 3: Cross multiply
    118,403.44x = 163,396.74 × 68,102.44
  4. Step 4: Simplify right side
    118,403.44x = 11,127,716,528.94
  5. Step 5: Solve for x
    x = 11,127,716,528.94/118,403.44
  6. Step 6: Final answer
    x = 93,981.36

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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.