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Finding the Fourth Proportional to 118,107.54, 162,981.99 and 67,806.54

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Solution

The fourth proportional to 118,107.54, 162,981.99 and 67,806.54 is: 93,569.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,107.54 : 162,981.99 = 67,806.54 : x
  2. Step 2: Convert to fraction form
    118,107.54/162,981.99 = 67,806.54/x
  3. Step 3: Cross multiply
    118,107.54x = 162,981.99 × 67,806.54
  4. Step 4: Simplify right side
    118,107.54x = 11,051,244,824.21
  5. Step 5: Solve for x
    x = 11,051,244,824.21/118,107.54
  6. Step 6: Final answer
    x = 93,569.34

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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.