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Finding the Fourth Proportional to 66,103.81, 91,223.75 and 35,889.32

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Solution

The fourth proportional to 66,103.81, 91,223.75 and 35,889.32 is: 49,527.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,103.81 : 91,223.75 = 35,889.32 : x
  2. Step 2: Convert to fraction form
    66,103.81/91,223.75 = 35,889.32/x
  3. Step 3: Cross multiply
    66,103.81x = 91,223.75 × 35,889.32
  4. Step 4: Simplify right side
    66,103.81x = 3,273,958,355.35
  5. Step 5: Solve for x
    x = 3,273,958,355.35/66,103.81
  6. Step 6: Final answer
    x = 49,527.53

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1.5x scale

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.