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Finding the Fourth Proportional to 111,640.68, 154,063.51 and 60,653

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Solution

The fourth proportional to 111,640.68, 154,063.51 and 60,653 is: 83,700.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,640.68 : 154,063.51 = 60,653 : x
  2. Step 2: Convert to fraction form
    111,640.68/154,063.51 = 60,653/x
  3. Step 3: Cross multiply
    111,640.68x = 154,063.51 × 60,653
  4. Step 4: Simplify right side
    111,640.68x = 9,344,414,072.03
  5. Step 5: Solve for x
    x = 9,344,414,072.03/111,640.68
  6. Step 6: Final answer
    x = 83,700.80

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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.