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Finding the Fourth Proportional to 411,222.59, 616,842.33 and 126,913.31

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Solution

The fourth proportional to 411,222.59, 616,842.33 and 126,913.31 is: 190,372.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,222.59 : 616,842.33 = 126,913.31 : x
  2. Step 2: Convert to fraction form
    411,222.59/616,842.33 = 126,913.31/x
  3. Step 3: Cross multiply
    411,222.59x = 616,842.33 × 126,913.31
  4. Step 4: Simplify right side
    411,222.59x = 78,285,501,844.51
  5. Step 5: Solve for x
    x = 78,285,501,844.51/411,222.59
  6. Step 6: Final answer
    x = 190,372.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.