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Finding the Fourth Proportional to 217,850.81, 300,598.76 and 136,169.39

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Solution

The fourth proportional to 217,850.81, 300,598.76 and 136,169.39 is: 187,891.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,850.81 : 300,598.76 = 136,169.39 : x
  2. Step 2: Convert to fraction form
    217,850.81/300,598.76 = 136,169.39/x
  3. Step 3: Cross multiply
    217,850.81x = 300,598.76 × 136,169.39
  4. Step 4: Simplify right side
    217,850.81x = 40,932,349,783.96
  5. Step 5: Solve for x
    x = 40,932,349,783.96/217,850.81
  6. Step 6: Final answer
    x = 187,891.66

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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.