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Finding the Fourth Proportional to 193,439.00, 290,065.12 and 81,089.03

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Solution

The fourth proportional to 193,439.00, 290,065.12 and 81,089.03 is: 121,594.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,439.00 : 290,065.12 = 81,089.03 : x
  2. Step 2: Convert to fraction form
    193,439.00/290,065.12 = 81,089.03/x
  3. Step 3: Cross multiply
    193,439.00x = 290,065.12 × 81,089.03
  4. Step 4: Simplify right side
    193,439.00x = 23,521,099,740.07
  5. Step 5: Solve for x
    x = 23,521,099,740.07/193,439.00
  6. Step 6: Final answer
    x = 121,594.40

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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.