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Finding the Fourth Proportional to 65,913.81, 90,960.60 and 35,698.44

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Solution

The fourth proportional to 65,913.81, 90,960.60 and 35,698.44 is: 49,263.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,913.81 : 90,960.60 = 35,698.44 : x
  2. Step 2: Convert to fraction form
    65,913.81/90,960.60 = 35,698.44/x
  3. Step 3: Cross multiply
    65,913.81x = 90,960.60 × 35,698.44
  4. Step 4: Simplify right side
    65,913.81x = 3,247,151,521.46
  5. Step 5: Solve for x
    x = 3,247,151,521.46/65,913.81
  6. Step 6: Final answer
    x = 49,263.60

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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.