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Finding the Fourth Proportional to 201,470.82, 278,039.16 and 116,571.48

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Solution

The fourth proportional to 201,470.82, 278,039.16 and 116,571.48 is: 160,874.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,470.82 : 278,039.16 = 116,571.48 : x
  2. Step 2: Convert to fraction form
    201,470.82/278,039.16 = 116,571.48/x
  3. Step 3: Cross multiply
    201,470.82x = 278,039.16 × 116,571.48
  4. Step 4: Simplify right side
    201,470.82x = 32,411,436,379.16
  5. Step 5: Solve for x
    x = 32,411,436,379.16/201,470.82
  6. Step 6: Final answer
    x = 160,874.10

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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.