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Finding the Fourth Proportional to 68,661.30, 94,761.72 and 38,448.30

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Solution

The fourth proportional to 68,661.30, 94,761.72 and 38,448.30 is: 53,063.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,661.30 : 94,761.72 = 38,448.30 : x
  2. Step 2: Convert to fraction form
    68,661.30/94,761.72 = 38,448.30/x
  3. Step 3: Cross multiply
    68,661.30x = 94,761.72 × 38,448.30
  4. Step 4: Simplify right side
    68,661.30x = 3,643,427,039.08
  5. Step 5: Solve for x
    x = 3,643,427,039.08/68,661.30
  6. Step 6: Final answer
    x = 53,063.76

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1.5x scale

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.