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Finding the Fourth Proportional to 363,739.71, 545,609.55 and 111,021.50

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Solution

The fourth proportional to 363,739.71, 545,609.55 and 111,021.50 is: 166,532.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,739.71 : 545,609.55 = 111,021.50 : x
  2. Step 2: Convert to fraction form
    363,739.71/545,609.55 = 111,021.50/x
  3. Step 3: Cross multiply
    363,739.71x = 545,609.55 × 111,021.50
  4. Step 4: Simplify right side
    363,739.71x = 60,574,392,435.68
  5. Step 5: Solve for x
    x = 60,574,392,435.68/363,739.71
  6. Step 6: Final answer
    x = 166,532.25

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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.