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Finding the Fourth Proportional to 208,317.74, 313,363.56 and 188,831.60

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Solution

The fourth proportional to 208,317.74, 313,363.56 and 188,831.60 is: 284,051.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,317.74 : 313,363.56 = 188,831.60 : x
  2. Step 2: Convert to fraction form
    208,317.74/313,363.56 = 188,831.60/x
  3. Step 3: Cross multiply
    208,317.74x = 313,363.56 × 188,831.60
  4. Step 4: Simplify right side
    208,317.74x = 59,172,942,416.50
  5. Step 5: Solve for x
    x = 59,172,942,416.50/208,317.74
  6. Step 6: Final answer
    x = 284,051.38

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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.