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Finding the Fourth Proportional to 208,765.44, 313,200 and 61,021.44

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Solution

The fourth proportional to 208,765.44, 313,200 and 61,021.44 is: 91,547.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,765.44 : 313,200 = 61,021.44 : x
  2. Step 2: Convert to fraction form
    208,765.44/313,200 = 61,021.44/x
  3. Step 3: Cross multiply
    208,765.44x = 313,200 × 61,021.44
  4. Step 4: Simplify right side
    208,765.44x = 19,111,915,008
  5. Step 5: Solve for x
    x = 19,111,915,008/208,765.44
  6. Step 6: Final answer
    x = 91,547.31

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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.