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Finding the Fourth Proportional to 192,215.64, 265,165.56 and 120,559.80

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Solution

The fourth proportional to 192,215.64, 265,165.56 and 120,559.80 is: 166,314.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,215.64 : 265,165.56 = 120,559.80 : x
  2. Step 2: Convert to fraction form
    192,215.64/265,165.56 = 120,559.80/x
  3. Step 3: Cross multiply
    192,215.64x = 265,165.56 × 120,559.80
  4. Step 4: Simplify right side
    192,215.64x = 31,968,306,880.49
  5. Step 5: Solve for x
    x = 31,968,306,880.49/192,215.64
  6. Step 6: Final answer
    x = 166,314.81

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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.