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Finding the Fourth Proportional to 405,876.35, 559,973.71 and 236,074.43

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Solution

The fourth proportional to 405,876.35, 559,973.71 and 236,074.43 is: 325,703.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,876.35 : 559,973.71 = 236,074.43 : x
  2. Step 2: Convert to fraction form
    405,876.35/559,973.71 = 236,074.43/x
  3. Step 3: Cross multiply
    405,876.35x = 559,973.71 × 236,074.43
  4. Step 4: Simplify right side
    405,876.35x = 132,195,474,403.24
  5. Step 5: Solve for x
    x = 132,195,474,403.24/405,876.35
  6. Step 6: Final answer
    x = 325,703.81

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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.