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Finding the Fourth Proportional to 65,805.07, 90,811.73 and 35,590.99

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Solution

The fourth proportional to 65,805.07, 90,811.73 and 35,590.99 is: 49,115.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,805.07 : 90,811.73 = 35,590.99 : x
  2. Step 2: Convert to fraction form
    65,805.07/90,811.73 = 35,590.99/x
  3. Step 3: Cross multiply
    65,805.07x = 90,811.73 × 35,590.99
  4. Step 4: Simplify right side
    65,805.07x = 3,232,078,742.30
  5. Step 5: Solve for x
    x = 3,232,078,742.30/65,805.07
  6. Step 6: Final answer
    x = 49,115.96

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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.