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Finding the Fourth Proportional to 106,480.90, 159,721.35 and 97,879.30

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Solution

The fourth proportional to 106,480.90, 159,721.35 and 97,879.30 is: 146,818.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,480.90 : 159,721.35 = 97,879.30 : x
  2. Step 2: Convert to fraction form
    106,480.90/159,721.35 = 97,879.30/x
  3. Step 3: Cross multiply
    106,480.90x = 159,721.35 × 97,879.30
  4. Step 4: Simplify right side
    106,480.90x = 15,633,413,933.06
  5. Step 5: Solve for x
    x = 15,633,413,933.06/106,480.90
  6. Step 6: Final answer
    x = 146,818.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.