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Finding the Fourth Proportional to 106,954.40, 147,600.54 and 61,628.90

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Solution

The fourth proportional to 106,954.40, 147,600.54 and 61,628.90 is: 85,049.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,954.40 : 147,600.54 = 61,628.90 : x
  2. Step 2: Convert to fraction form
    106,954.40/147,600.54 = 61,628.90/x
  3. Step 3: Cross multiply
    106,954.40x = 147,600.54 × 61,628.90
  4. Step 4: Simplify right side
    106,954.40x = 9,096,458,919.61
  5. Step 5: Solve for x
    x = 9,096,458,919.61/106,954.40
  6. Step 6: Final answer
    x = 85,049.88

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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.