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Finding the Fourth Proportional to 356,653.75, 534,603.57 and 131,869.84

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Solution

The fourth proportional to 356,653.75, 534,603.57 and 131,869.84 is: 197,665.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,653.75 : 534,603.57 = 131,869.84 : x
  2. Step 2: Convert to fraction form
    356,653.75/534,603.57 = 131,869.84/x
  3. Step 3: Cross multiply
    356,653.75x = 534,603.57 × 131,869.84
  4. Step 4: Simplify right side
    356,653.75x = 70,498,087,239.33
  5. Step 5: Solve for x
    x = 70,498,087,239.33/356,653.75
  6. Step 6: Final answer
    x = 197,665.35

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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.