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Finding the Fourth Proportional to 405,804.57, 560,189.67 and 242,518.68

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Solution

The fourth proportional to 405,804.57, 560,189.67 and 242,518.68 is: 334,782.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,804.57 : 560,189.67 = 242,518.68 : x
  2. Step 2: Convert to fraction form
    405,804.57/560,189.67 = 242,518.68/x
  3. Step 3: Cross multiply
    405,804.57x = 560,189.67 × 242,518.68
  4. Step 4: Simplify right side
    405,804.57x = 135,856,459,318.04
  5. Step 5: Solve for x
    x = 135,856,459,318.04/405,804.57
  6. Step 6: Final answer
    x = 334,782.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.