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Finding the Fourth Proportional to 405,890.80, 608,836.20 and 184,274.80

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Solution

The fourth proportional to 405,890.80, 608,836.20 and 184,274.80 is: 276,412.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,890.80 : 608,836.20 = 184,274.80 : x
  2. Step 2: Convert to fraction form
    405,890.80/608,836.20 = 184,274.80/x
  3. Step 3: Cross multiply
    405,890.80x = 608,836.20 × 184,274.80
  4. Step 4: Simplify right side
    405,890.80x = 112,193,168,987.76
  5. Step 5: Solve for x
    x = 112,193,168,987.76/405,890.80
  6. Step 6: Final answer
    x = 276,412.20

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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.