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Finding the Fourth Proportional to 324,415.76, 447,689.32 and 181,178.32

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Solution

The fourth proportional to 324,415.76, 447,689.32 and 181,178.32 is: 250,023.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,415.76 : 447,689.32 = 181,178.32 : x
  2. Step 2: Convert to fraction form
    324,415.76/447,689.32 = 181,178.32/x
  3. Step 3: Cross multiply
    324,415.76x = 447,689.32 × 181,178.32
  4. Step 4: Simplify right side
    324,415.76x = 81,111,598,879.54
  5. Step 5: Solve for x
    x = 81,111,598,879.54/324,415.76
  6. Step 6: Final answer
    x = 250,023.61

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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.