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Finding the Fourth Proportional to 136,798.53, 188,860.50 and 104,277.84

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Solution

The fourth proportional to 136,798.53, 188,860.50 and 104,277.84 is: 143,963.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,798.53 : 188,860.50 = 104,277.84 : x
  2. Step 2: Convert to fraction form
    136,798.53/188,860.50 = 104,277.84/x
  3. Step 3: Cross multiply
    136,798.53x = 188,860.50 × 104,277.84
  4. Step 4: Simplify right side
    136,798.53x = 19,693,965,001.32
  5. Step 5: Solve for x
    x = 19,693,965,001.32/136,798.53
  6. Step 6: Final answer
    x = 143,963.28

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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.