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Finding the Fourth Proportional to 368,205, 552,314.22 and 115,479.84

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Solution

The fourth proportional to 368,205, 552,314.22 and 115,479.84 is: 173,221.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,205 : 552,314.22 = 115,479.84 : x
  2. Step 2: Convert to fraction form
    368,205/552,314.22 = 115,479.84/x
  3. Step 3: Cross multiply
    368,205x = 552,314.22 × 115,479.84
  4. Step 4: Simplify right side
    368,205x = 63,781,157,755.32
  5. Step 5: Solve for x
    x = 63,781,157,755.32/368,205
  6. Step 6: Final answer
    x = 173,221.87

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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.