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Finding the Fourth Proportional to 66,392.43, 91,623.87 and 36,180.24

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Solution

The fourth proportional to 66,392.43, 91,623.87 and 36,180.24 is: 49,929.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,392.43 : 91,623.87 = 36,180.24 : x
  2. Step 2: Convert to fraction form
    66,392.43/91,623.87 = 36,180.24/x
  3. Step 3: Cross multiply
    66,392.43x = 91,623.87 × 36,180.24
  4. Step 4: Simplify right side
    66,392.43x = 3,314,973,606.33
  5. Step 5: Solve for x
    x = 3,314,973,606.33/66,392.43
  6. Step 6: Final answer
    x = 49,929.99

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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.