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Finding the Fourth Proportional to 111,896.16, 154,381.92 and 63,490.08

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Solution

The fourth proportional to 111,896.16, 154,381.92 and 63,490.08 is: 87,596.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,896.16 : 154,381.92 = 63,490.08 : x
  2. Step 2: Convert to fraction form
    111,896.16/154,381.92 = 63,490.08/x
  3. Step 3: Cross multiply
    111,896.16x = 154,381.92 × 63,490.08
  4. Step 4: Simplify right side
    111,896.16x = 9,801,720,451.35
  5. Step 5: Solve for x
    x = 9,801,720,451.35/111,896.16
  6. Step 6: Final answer
    x = 87,596.58

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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.