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Finding the Fourth Proportional to 255,215.61, 382,823.42 and 68,222.25

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Solution

The fourth proportional to 255,215.61, 382,823.42 and 68,222.25 is: 102,333.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,215.61 : 382,823.42 = 68,222.25 : x
  2. Step 2: Convert to fraction form
    255,215.61/382,823.42 = 68,222.25/x
  3. Step 3: Cross multiply
    255,215.61x = 382,823.42 × 68,222.25
  4. Step 4: Simplify right side
    255,215.61x = 26,117,074,723.98
  5. Step 5: Solve for x
    x = 26,117,074,723.98/255,215.61
  6. Step 6: Final answer
    x = 102,333.38

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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.