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Finding the Fourth Proportional to 48,642.81, 67,101.54 and 39,578.31

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Solution

The fourth proportional to 48,642.81, 67,101.54 and 39,578.31 is: 54,597.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,642.81 : 67,101.54 = 39,578.31 : x
  2. Step 2: Convert to fraction form
    48,642.81/67,101.54 = 39,578.31/x
  3. Step 3: Cross multiply
    48,642.81x = 67,101.54 × 39,578.31
  4. Step 4: Simplify right side
    48,642.81x = 2,655,765,551.60
  5. Step 5: Solve for x
    x = 2,655,765,551.60/48,642.81
  6. Step 6: Final answer
    x = 54,597.29

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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.