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Finding the Fourth Proportional to 619,103.07, 854,543.66 and 404,276.49

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Solution

The fourth proportional to 619,103.07, 854,543.66 and 404,276.49 is: 558,020.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,103.07 : 854,543.66 = 404,276.49 : x
  2. Step 2: Convert to fraction form
    619,103.07/854,543.66 = 404,276.49/x
  3. Step 3: Cross multiply
    619,103.07x = 854,543.66 × 404,276.49
  4. Step 4: Simplify right side
    619,103.07x = 345,471,909,395.17
  5. Step 5: Solve for x
    x = 345,471,909,395.17/619,103.07
  6. Step 6: Final answer
    x = 558,020.02

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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.