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Finding the Fourth Proportional to 65,805.68, 90,811.58 and 35,591.04

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Solution

The fourth proportional to 65,805.68, 90,811.58 and 35,591.04 is: 49,115.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,805.68 : 90,811.58 = 35,591.04 : x
  2. Step 2: Convert to fraction form
    65,805.68/90,811.58 = 35,591.04/x
  3. Step 3: Cross multiply
    65,805.68x = 90,811.58 × 35,591.04
  4. Step 4: Simplify right side
    65,805.68x = 3,232,078,398.29
  5. Step 5: Solve for x
    x = 3,232,078,398.29/65,805.68
  6. Step 6: Final answer
    x = 49,115.49

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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.