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Finding the Fourth Proportional to 193,361.64, 266,837.94 and 108,478.50

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Solution

The fourth proportional to 193,361.64, 266,837.94 and 108,478.50 is: 149,699.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,361.64 : 266,837.94 = 108,478.50 : x
  2. Step 2: Convert to fraction form
    193,361.64/266,837.94 = 108,478.50/x
  3. Step 3: Cross multiply
    193,361.64x = 266,837.94 × 108,478.50
  4. Step 4: Simplify right side
    193,361.64x = 28,946,179,474.29
  5. Step 5: Solve for x
    x = 28,946,179,474.29/193,361.64
  6. Step 6: Final answer
    x = 149,699.70

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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.