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Finding the Fourth Proportional to 695,874.22, 960,290.80 and 405,467.68

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Solution

The fourth proportional to 695,874.22, 960,290.80 and 405,467.68 is: 559,536.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,874.22 : 960,290.80 = 405,467.68 : x
  2. Step 2: Convert to fraction form
    695,874.22/960,290.80 = 405,467.68/x
  3. Step 3: Cross multiply
    695,874.22x = 960,290.80 × 405,467.68
  4. Step 4: Simplify right side
    695,874.22x = 389,366,885,708.91
  5. Step 5: Solve for x
    x = 389,366,885,708.91/695,874.22
  6. Step 6: Final answer
    x = 559,536.30

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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.