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Finding the Fourth Proportional to 361,628.99, 542,447.59 and 136,928.41

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Solution

The fourth proportional to 361,628.99, 542,447.59 and 136,928.41 is: 205,394.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,628.99 : 542,447.59 = 136,928.41 : x
  2. Step 2: Convert to fraction form
    361,628.99/542,447.59 = 136,928.41/x
  3. Step 3: Cross multiply
    361,628.99x = 542,447.59 × 136,928.41
  4. Step 4: Simplify right side
    361,628.99x = 74,276,486,007.03
  5. Step 5: Solve for x
    x = 74,276,486,007.03/361,628.99
  6. Step 6: Final answer
    x = 205,394.17

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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.