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Finding the Fourth Proportional to 74,649.91, 103,016.88 and 41,115.91

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Solution

The fourth proportional to 74,649.91, 103,016.88 and 41,115.91 is: 56,739.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,649.91 : 103,016.88 = 41,115.91 : x
  2. Step 2: Convert to fraction form
    74,649.91/103,016.88 = 41,115.91/x
  3. Step 3: Cross multiply
    74,649.91x = 103,016.88 × 41,115.91
  4. Step 4: Simplify right side
    74,649.91x = 4,235,632,045.90
  5. Step 5: Solve for x
    x = 4,235,632,045.90/74,649.91
  6. Step 6: Final answer
    x = 56,739.95

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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.