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Finding the Fourth Proportional to 111,563.58, 153,013.82 and 98,966.46

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Solution

The fourth proportional to 111,563.58, 153,013.82 and 98,966.46 is: 135,736.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,563.58 : 153,013.82 = 98,966.46 : x
  2. Step 2: Convert to fraction form
    111,563.58/153,013.82 = 98,966.46/x
  3. Step 3: Cross multiply
    111,563.58x = 153,013.82 × 98,966.46
  4. Step 4: Simplify right side
    111,563.58x = 15,143,235,601.64
  5. Step 5: Solve for x
    x = 15,143,235,601.64/111,563.58
  6. Step 6: Final answer
    x = 135,736.37

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.