Home / 219,186.57-328,661.39-76,995.12

Finding the Fourth Proportional to 219,186.57, 328,661.39 and 76,995.12

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Solution

The fourth proportional to 219,186.57, 328,661.39 and 76,995.12 is: 115,451.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,186.57 : 328,661.39 = 76,995.12 : x
  2. Step 2: Convert to fraction form
    219,186.57/328,661.39 = 76,995.12/x
  3. Step 3: Cross multiply
    219,186.57x = 328,661.39 × 76,995.12
  4. Step 4: Simplify right side
    219,186.57x = 25,305,323,162.42
  5. Step 5: Solve for x
    x = 25,305,323,162.42/219,186.57
  6. Step 6: Final answer
    x = 115,451.07

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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.