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Finding the Fourth Proportional to 111,361.44, 153,656.96 and 66,030.96

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Solution

The fourth proportional to 111,361.44, 153,656.96 and 66,030.96 is: 91,109.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,361.44 : 153,656.96 = 66,030.96 : x
  2. Step 2: Convert to fraction form
    111,361.44/153,656.96 = 66,030.96/x
  3. Step 3: Cross multiply
    111,361.44x = 153,656.96 × 66,030.96
  4. Step 4: Simplify right side
    111,361.44x = 10,146,116,579.48
  5. Step 5: Solve for x
    x = 10,146,116,579.48/111,361.44
  6. Step 6: Final answer
    x = 91,109.78

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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.