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Finding the Fourth Proportional to 111,643.94, 154,064.48 and 63,896.06

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Solution

The fourth proportional to 111,643.94, 154,064.48 and 63,896.06 is: 88,174.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,643.94 : 154,064.48 = 63,896.06 : x
  2. Step 2: Convert to fraction form
    111,643.94/154,064.48 = 63,896.06/x
  3. Step 3: Cross multiply
    111,643.94x = 154,064.48 × 63,896.06
  4. Step 4: Simplify right side
    111,643.94x = 9,844,113,257.95
  5. Step 5: Solve for x
    x = 9,844,113,257.95/111,643.94
  6. Step 6: Final answer
    x = 88,174.18

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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.