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Finding the Fourth Proportional to 205,683.10, 308,555.43 and 65,473.18

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Solution

The fourth proportional to 205,683.10, 308,555.43 and 65,473.18 is: 98,219.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,683.10 : 308,555.43 = 65,473.18 : x
  2. Step 2: Convert to fraction form
    205,683.10/308,555.43 = 65,473.18/x
  3. Step 3: Cross multiply
    205,683.10x = 308,555.43 × 65,473.18
  4. Step 4: Simplify right side
    205,683.10x = 20,202,105,208.37
  5. Step 5: Solve for x
    x = 20,202,105,208.37/205,683.10
  6. Step 6: Final answer
    x = 98,219.57

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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.