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Finding the Fourth Proportional to 211,589.92, 317,412.51 and 111,754.08

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Solution

The fourth proportional to 211,589.92, 317,412.51 and 111,754.08 is: 167,645.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,589.92 : 317,412.51 = 111,754.08 : x
  2. Step 2: Convert to fraction form
    211,589.92/317,412.51 = 111,754.08/x
  3. Step 3: Cross multiply
    211,589.92x = 317,412.51 × 111,754.08
  4. Step 4: Simplify right side
    211,589.92x = 35,472,142,616.46
  5. Step 5: Solve for x
    x = 35,472,142,616.46/211,589.92
  6. Step 6: Final answer
    x = 167,645.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.