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Finding the Fourth Proportional to 65,913.87, 90,960.69 and 35,698.50

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Solution

The fourth proportional to 65,913.87, 90,960.69 and 35,698.50 is: 49,263.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,913.87 : 90,960.69 = 35,698.50 : x
  2. Step 2: Convert to fraction form
    65,913.87/90,960.69 = 35,698.50/x
  3. Step 3: Cross multiply
    65,913.87x = 90,960.69 × 35,698.50
  4. Step 4: Simplify right side
    65,913.87x = 3,247,160,058.10
  5. Step 5: Solve for x
    x = 3,247,160,058.10/65,913.87
  6. Step 6: Final answer
    x = 49,263.68

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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.