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Finding the Fourth Proportional to 1,189,743.75, 1,784,709.18 and 336,801.60

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Solution

The fourth proportional to 1,189,743.75, 1,784,709.18 and 336,801.60 is: 505,228.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,743.75 : 1,784,709.18 = 336,801.60 : x
  2. Step 2: Convert to fraction form
    1,189,743.75/1,784,709.18 = 336,801.60/x
  3. Step 3: Cross multiply
    1,189,743.75x = 1,784,709.18 × 336,801.60
  4. Step 4: Simplify right side
    1,189,743.75x = 601,092,907,358.69
  5. Step 5: Solve for x
    x = 601,092,907,358.69/1,189,743.75
  6. Step 6: Final answer
    x = 505,228.88

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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.