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Finding the Fourth Proportional to 405,814.12, 608,797.72 and 125,265.76

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Solution

The fourth proportional to 405,814.12, 608,797.72 and 125,265.76 is: 187,922.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,814.12 : 608,797.72 = 125,265.76 : x
  2. Step 2: Convert to fraction form
    405,814.12/608,797.72 = 125,265.76/x
  3. Step 3: Cross multiply
    405,814.12x = 608,797.72 × 125,265.76
  4. Step 4: Simplify right side
    405,814.12x = 76,261,509,082.07
  5. Step 5: Solve for x
    x = 76,261,509,082.07/405,814.12
  6. Step 6: Final answer
    x = 187,922.27

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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.