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Finding the Fourth Proportional to 198,307.68, 273,662.64 and 107,664.48

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Solution

The fourth proportional to 198,307.68, 273,662.64 and 107,664.48 is: 148,575.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,307.68 : 273,662.64 = 107,664.48 : x
  2. Step 2: Convert to fraction form
    198,307.68/273,662.64 = 107,664.48/x
  3. Step 3: Cross multiply
    198,307.68x = 273,662.64 × 107,664.48
  4. Step 4: Simplify right side
    198,307.68x = 29,463,745,831.03
  5. Step 5: Solve for x
    x = 29,463,745,831.03/198,307.68
  6. Step 6: Final answer
    x = 148,575.92

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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.