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Finding the Fourth Proportional to 127,268.01, 190,900.80 and 77,361.89

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Solution

The fourth proportional to 127,268.01, 190,900.80 and 77,361.89 is: 116,042.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,268.01 : 190,900.80 = 77,361.89 : x
  2. Step 2: Convert to fraction form
    127,268.01/190,900.80 = 77,361.89/x
  3. Step 3: Cross multiply
    127,268.01x = 190,900.80 × 77,361.89
  4. Step 4: Simplify right side
    127,268.01x = 14,768,445,736.01
  5. Step 5: Solve for x
    x = 14,768,445,736.01/127,268.01
  6. Step 6: Final answer
    x = 116,042.09

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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.