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Finding the Fourth Proportional to 619,127.79, 854,518.91 and 401,606.07

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Solution

The fourth proportional to 619,127.79, 854,518.91 and 401,606.07 is: 554,295.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,127.79 : 854,518.91 = 401,606.07 : x
  2. Step 2: Convert to fraction form
    619,127.79/854,518.91 = 401,606.07/x
  3. Step 3: Cross multiply
    619,127.79x = 854,518.91 × 401,606.07
  4. Step 4: Simplify right side
    619,127.79x = 343,179,981,185.78
  5. Step 5: Solve for x
    x = 343,179,981,185.78/619,127.79
  6. Step 6: Final answer
    x = 554,295.88

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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.