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Finding the Fourth Proportional to 68,995.58, 95,216.60 and 38,780.81

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Solution

The fourth proportional to 68,995.58, 95,216.60 and 38,780.81 is: 53,519.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,995.58 : 95,216.60 = 38,780.81 : x
  2. Step 2: Convert to fraction form
    68,995.58/95,216.60 = 38,780.81/x
  3. Step 3: Cross multiply
    68,995.58x = 95,216.60 × 38,780.81
  4. Step 4: Simplify right side
    68,995.58x = 3,692,576,705.95
  5. Step 5: Solve for x
    x = 3,692,576,705.95/68,995.58
  6. Step 6: Final answer
    x = 53,519.03

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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.