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Finding the Fourth Proportional to 188,502.97, 260,127.51 and 103,619.42

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Solution

The fourth proportional to 188,502.97, 260,127.51 and 103,619.42 is: 142,991.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,502.97 : 260,127.51 = 103,619.42 : x
  2. Step 2: Convert to fraction form
    188,502.97/260,127.51 = 103,619.42/x
  3. Step 3: Cross multiply
    188,502.97x = 260,127.51 × 103,619.42
  4. Step 4: Simplify right side
    188,502.97x = 26,954,261,712.24
  5. Step 5: Solve for x
    x = 26,954,261,712.24/188,502.97
  6. Step 6: Final answer
    x = 142,991.18

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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.