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Finding the Fourth Proportional to 190,843.81, 285,829.69 and 91,074.05

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Solution

The fourth proportional to 190,843.81, 285,829.69 and 91,074.05 is: 136,403.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,843.81 : 285,829.69 = 91,074.05 : x
  2. Step 2: Convert to fraction form
    190,843.81/285,829.69 = 91,074.05/x
  3. Step 3: Cross multiply
    190,843.81x = 285,829.69 × 91,074.05
  4. Step 4: Simplify right side
    190,843.81x = 26,031,667,478.54
  5. Step 5: Solve for x
    x = 26,031,667,478.54/190,843.81
  6. Step 6: Final answer
    x = 136,403.00

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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.