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Finding the Fourth Proportional to 393,815.80, 590,043.30 and 183,021.40

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Solution

The fourth proportional to 393,815.80, 590,043.30 and 183,021.40 is: 274,215.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,815.80 : 590,043.30 = 183,021.40 : x
  2. Step 2: Convert to fraction form
    393,815.80/590,043.30 = 183,021.40/x
  3. Step 3: Cross multiply
    393,815.80x = 590,043.30 × 183,021.40
  4. Step 4: Simplify right side
    393,815.80x = 107,990,550,826.62
  5. Step 5: Solve for x
    x = 107,990,550,826.62/393,815.80
  6. Step 6: Final answer
    x = 274,215.89

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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.