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Finding the Fourth Proportional to 106,791.39, 147,361.14 and 61,460.55

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Solution

The fourth proportional to 106,791.39, 147,361.14 and 61,460.55 is: 84,809.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,791.39 : 147,361.14 = 61,460.55 : x
  2. Step 2: Convert to fraction form
    106,791.39/147,361.14 = 61,460.55/x
  3. Step 3: Cross multiply
    106,791.39x = 147,361.14 × 61,460.55
  4. Step 4: Simplify right side
    106,791.39x = 9,056,896,713.03
  5. Step 5: Solve for x
    x = 9,056,896,713.03/106,791.39
  6. Step 6: Final answer
    x = 84,809.24

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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.