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Finding the Fourth Proportional to 99,603.36, 149,326.80 and 67,934.88

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Solution

The fourth proportional to 99,603.36, 149,326.80 and 67,934.88 is: 101,848.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,603.36 : 149,326.80 = 67,934.88 : x
  2. Step 2: Convert to fraction form
    99,603.36/149,326.80 = 67,934.88/x
  3. Step 3: Cross multiply
    99,603.36x = 149,326.80 × 67,934.88
  4. Step 4: Simplify right side
    99,603.36x = 10,144,498,238.78
  5. Step 5: Solve for x
    x = 10,144,498,238.78/99,603.36
  6. Step 6: Final answer
    x = 101,848.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.