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Finding the Fourth Proportional to 146,636, 202,357.68 and 79,568

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Solution

The fourth proportional to 146,636, 202,357.68 and 79,568 is: 109,803.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,636 : 202,357.68 = 79,568 : x
  2. Step 2: Convert to fraction form
    146,636/202,357.68 = 79,568/x
  3. Step 3: Cross multiply
    146,636x = 202,357.68 × 79,568
  4. Step 4: Simplify right side
    146,636x = 16,101,195,882.24
  5. Step 5: Solve for x
    x = 16,101,195,882.24/146,636
  6. Step 6: Final answer
    x = 109,803.84

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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.