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Finding the Fourth Proportional to 405,438.16, 559,593.48 and 235,770.16

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Solution

The fourth proportional to 405,438.16, 559,593.48 and 235,770.16 is: 325,414.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,438.16 : 559,593.48 = 235,770.16 : x
  2. Step 2: Convert to fraction form
    405,438.16/559,593.48 = 235,770.16/x
  3. Step 3: Cross multiply
    405,438.16x = 559,593.48 × 235,770.16
  4. Step 4: Simplify right side
    405,438.16x = 131,935,444,314.56
  5. Step 5: Solve for x
    x = 131,935,444,314.56/405,438.16
  6. Step 6: Final answer
    x = 325,414.47

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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.