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Finding the Fourth Proportional to 65,394.99, 90,272.21 and 44,202.96

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Solution

The fourth proportional to 65,394.99, 90,272.21 and 44,202.96 is: 61,018.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,394.99 : 90,272.21 = 44,202.96 : x
  2. Step 2: Convert to fraction form
    65,394.99/90,272.21 = 44,202.96/x
  3. Step 3: Cross multiply
    65,394.99x = 90,272.21 × 44,202.96
  4. Step 4: Simplify right side
    65,394.99x = 3,990,298,666.73
  5. Step 5: Solve for x
    x = 3,990,298,666.73/65,394.99
  6. Step 6: Final answer
    x = 61,018.42

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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.