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Finding the Fourth Proportional to 64,848.78, 89,491.26 and 35,040.78

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Solution

The fourth proportional to 64,848.78, 89,491.26 and 35,040.78 is: 48,356.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,848.78 : 89,491.26 = 35,040.78 : x
  2. Step 2: Convert to fraction form
    64,848.78/89,491.26 = 35,040.78/x
  3. Step 3: Cross multiply
    64,848.78x = 89,491.26 × 35,040.78
  4. Step 4: Simplify right side
    64,848.78x = 3,135,843,553.58
  5. Step 5: Solve for x
    x = 3,135,843,553.58/64,848.78
  6. Step 6: Final answer
    x = 48,356.25

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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.