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Finding the Fourth Proportional to 61,768.78, 92,653.16 and 15,021.65

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Solution

The fourth proportional to 61,768.78, 92,653.16 and 15,021.65 is: 22,532.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,768.78 : 92,653.16 = 15,021.65 : x
  2. Step 2: Convert to fraction form
    61,768.78/92,653.16 = 15,021.65/x
  3. Step 3: Cross multiply
    61,768.78x = 92,653.16 × 15,021.65
  4. Step 4: Simplify right side
    61,768.78x = 1,391,803,497.44
  5. Step 5: Solve for x
    x = 1,391,803,497.44/61,768.78
  6. Step 6: Final answer
    x = 22,532.48

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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.