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Finding the Fourth Proportional to 68,832.78, 94,980.78 and 40,533

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Solution

The fourth proportional to 68,832.78, 94,980.78 and 40,533 is: 55,930.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,832.78 : 94,980.78 = 40,533 : x
  2. Step 2: Convert to fraction form
    68,832.78/94,980.78 = 40,533/x
  3. Step 3: Cross multiply
    68,832.78x = 94,980.78 × 40,533
  4. Step 4: Simplify right side
    68,832.78x = 3,849,855,955.74
  5. Step 5: Solve for x
    x = 3,849,855,955.74/68,832.78
  6. Step 6: Final answer
    x = 55,930.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.