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Finding the Fourth Proportional to 475,718.22, 656,835.55 and 306,247.58

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Solution

The fourth proportional to 475,718.22, 656,835.55 and 306,247.58 is: 422,843.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,718.22 : 656,835.55 = 306,247.58 : x
  2. Step 2: Convert to fraction form
    475,718.22/656,835.55 = 306,247.58/x
  3. Step 3: Cross multiply
    475,718.22x = 656,835.55 × 306,247.58
  4. Step 4: Simplify right side
    475,718.22x = 201,154,297,645.47
  5. Step 5: Solve for x
    x = 201,154,297,645.47/475,718.22
  6. Step 6: Final answer
    x = 422,843.37

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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.