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Finding the Fourth Proportional to 63,790.94, 95,690.32 and 19,420.98

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Solution

The fourth proportional to 63,790.94, 95,690.32 and 19,420.98 is: 29,132.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,790.94 : 95,690.32 = 19,420.98 : x
  2. Step 2: Convert to fraction form
    63,790.94/95,690.32 = 19,420.98/x
  3. Step 3: Cross multiply
    63,790.94x = 95,690.32 × 19,420.98
  4. Step 4: Simplify right side
    63,790.94x = 1,858,399,790.91
  5. Step 5: Solve for x
    x = 1,858,399,790.91/63,790.94
  6. Step 6: Final answer
    x = 29,132.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.