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Finding the Fourth Proportional to 215,300.46, 322,972.71 and 82,292.67

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Solution

The fourth proportional to 215,300.46, 322,972.71 and 82,292.67 is: 123,447.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,300.46 : 322,972.71 = 82,292.67 : x
  2. Step 2: Convert to fraction form
    215,300.46/322,972.71 = 82,292.67/x
  3. Step 3: Cross multiply
    215,300.46x = 322,972.71 × 82,292.67
  4. Step 4: Simplify right side
    215,300.46x = 26,578,286,643.04
  5. Step 5: Solve for x
    x = 26,578,286,643.04/215,300.46
  6. Step 6: Final answer
    x = 123,447.42

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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.