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Finding the Fourth Proportional to 111,776.72, 154,498.44 and 98,246.48

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Solution

The fourth proportional to 111,776.72, 154,498.44 and 98,246.48 is: 135,796.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,776.72 : 154,498.44 = 98,246.48 : x
  2. Step 2: Convert to fraction form
    111,776.72/154,498.44 = 98,246.48/x
  3. Step 3: Cross multiply
    111,776.72x = 154,498.44 × 98,246.48
  4. Step 4: Simplify right side
    111,776.72x = 15,178,927,895.49
  5. Step 5: Solve for x
    x = 15,178,927,895.49/111,776.72
  6. Step 6: Final answer
    x = 135,796.86

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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.