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Finding the Fourth Proportional to 691,871.13, 954,801.41 and 405,403.29

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Solution

The fourth proportional to 691,871.13, 954,801.41 and 405,403.29 is: 559,467.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,871.13 : 954,801.41 = 405,403.29 : x
  2. Step 2: Convert to fraction form
    691,871.13/954,801.41 = 405,403.29/x
  3. Step 3: Cross multiply
    691,871.13x = 954,801.41 × 405,403.29
  4. Step 4: Simplify right side
    691,871.13x = 387,079,630,883.62
  5. Step 5: Solve for x
    x = 387,079,630,883.62/691,871.13
  6. Step 6: Final answer
    x = 559,467.82

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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.