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Finding the Fourth Proportional to 118,455.84, 163,483.92 and 68,171.04

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Solution

The fourth proportional to 118,455.84, 163,483.92 and 68,171.04 is: 94,084.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,455.84 : 163,483.92 = 68,171.04 : x
  2. Step 2: Convert to fraction form
    118,455.84/163,483.92 = 68,171.04/x
  3. Step 3: Cross multiply
    118,455.84x = 163,483.92 × 68,171.04
  4. Step 4: Simplify right side
    118,455.84x = 11,144,868,849.68
  5. Step 5: Solve for x
    x = 11,144,868,849.68/118,455.84
  6. Step 6: Final answer
    x = 94,084.59

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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.