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Finding the Fourth Proportional to 34,379.91, 47,435.22 and 19,840.48

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Solution

The fourth proportional to 34,379.91, 47,435.22 and 19,840.48 is: 27,374.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,379.91 : 47,435.22 = 19,840.48 : x
  2. Step 2: Convert to fraction form
    34,379.91/47,435.22 = 19,840.48/x
  3. Step 3: Cross multiply
    34,379.91x = 47,435.22 × 19,840.48
  4. Step 4: Simplify right side
    34,379.91x = 941,137,415.12
  5. Step 5: Solve for x
    x = 941,137,415.12/34,379.91
  6. Step 6: Final answer
    x = 27,374.63

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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.