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Finding the Fourth Proportional to 209,484.73, 314,276.31 and 69,243.37

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Solution

The fourth proportional to 209,484.73, 314,276.31 and 69,243.37 is: 103,881.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,484.73 : 314,276.31 = 69,243.37 : x
  2. Step 2: Convert to fraction form
    209,484.73/314,276.31 = 69,243.37/x
  3. Step 3: Cross multiply
    209,484.73x = 314,276.31 × 69,243.37
  4. Step 4: Simplify right side
    209,484.73x = 21,761,550,815.56
  5. Step 5: Solve for x
    x = 21,761,550,815.56/209,484.73
  6. Step 6: Final answer
    x = 103,881.32

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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.