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Finding the Fourth Proportional to 65,900.60, 90,942.67 and 35,685.93

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Solution

The fourth proportional to 65,900.60, 90,942.67 and 35,685.93 is: 49,246.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,900.60 : 90,942.67 = 35,685.93 : x
  2. Step 2: Convert to fraction form
    65,900.60/90,942.67 = 35,685.93/x
  3. Step 3: Cross multiply
    65,900.60x = 90,942.67 × 35,685.93
  4. Step 4: Simplify right side
    65,900.60x = 3,245,373,459.21
  5. Step 5: Solve for x
    x = 3,245,373,459.21/65,900.60
  6. Step 6: Final answer
    x = 49,246.49

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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.