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Finding the Fourth Proportional to 188,812.60, 283,218.90 and 104,831.80

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Solution

The fourth proportional to 188,812.60, 283,218.90 and 104,831.80 is: 157,247.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,812.60 : 283,218.90 = 104,831.80 : x
  2. Step 2: Convert to fraction form
    188,812.60/283,218.90 = 104,831.80/x
  3. Step 3: Cross multiply
    188,812.60x = 283,218.90 × 104,831.80
  4. Step 4: Simplify right side
    188,812.60x = 29,690,347,081.02
  5. Step 5: Solve for x
    x = 29,690,347,081.02/188,812.60
  6. Step 6: Final answer
    x = 157,247.70

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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.