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Finding the Fourth Proportional to 210,288.78, 315,433.17 and 62,544.78

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Solution

The fourth proportional to 210,288.78, 315,433.17 and 62,544.78 is: 93,817.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,288.78 : 315,433.17 = 62,544.78 : x
  2. Step 2: Convert to fraction form
    210,288.78/315,433.17 = 62,544.78/x
  3. Step 3: Cross multiply
    210,288.78x = 315,433.17 × 62,544.78
  4. Step 4: Simplify right side
    210,288.78x = 19,728,698,222.35
  5. Step 5: Solve for x
    x = 19,728,698,222.35/210,288.78
  6. Step 6: Final answer
    x = 93,817.17

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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.