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Finding the Fourth Proportional to 106,609.17, 147,122.95 and 58,865.54

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Solution

The fourth proportional to 106,609.17, 147,122.95 and 58,865.54 is: 81,235.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,609.17 : 147,122.95 = 58,865.54 : x
  2. Step 2: Convert to fraction form
    106,609.17/147,122.95 = 58,865.54/x
  3. Step 3: Cross multiply
    106,609.17x = 147,122.95 × 58,865.54
  4. Step 4: Simplify right side
    106,609.17x = 8,660,471,898.14
  5. Step 5: Solve for x
    x = 8,660,471,898.14/106,609.17
  6. Step 6: Final answer
    x = 81,235.71

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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.