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Finding the Fourth Proportional to 65,806.85, 90,813.09 and 35,591.93

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Solution

The fourth proportional to 65,806.85, 90,813.09 and 35,591.93 is: 49,116.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,806.85 : 90,813.09 = 35,591.93 : x
  2. Step 2: Convert to fraction form
    65,806.85/90,813.09 = 35,591.93/x
  3. Step 3: Cross multiply
    65,806.85x = 90,813.09 × 35,591.93
  4. Step 4: Simplify right side
    65,806.85x = 3,232,212,688.30
  5. Step 5: Solve for x
    x = 3,232,212,688.30/65,806.85
  6. Step 6: Final answer
    x = 49,116.66

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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.