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Finding the Fourth Proportional to 74,649.57, 103,016.40 and 41,115.57

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Solution

The fourth proportional to 74,649.57, 103,016.40 and 41,115.57 is: 56,739.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,649.57 : 103,016.40 = 41,115.57 : x
  2. Step 2: Convert to fraction form
    74,649.57/103,016.40 = 41,115.57/x
  3. Step 3: Cross multiply
    74,649.57x = 103,016.40 × 41,115.57
  4. Step 4: Simplify right side
    74,649.57x = 4,235,578,005.35
  5. Step 5: Solve for x
    x = 4,235,578,005.35/74,649.57
  6. Step 6: Final answer
    x = 56,739.48

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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.