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Finding the Fourth Proportional to 405,857.48, 560,171.60 and 236,113.88

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Solution

The fourth proportional to 405,857.48, 560,171.60 and 236,113.88 is: 325,888.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,857.48 : 560,171.60 = 236,113.88 : x
  2. Step 2: Convert to fraction form
    405,857.48/560,171.60 = 236,113.88/x
  3. Step 3: Cross multiply
    405,857.48x = 560,171.60 × 236,113.88
  4. Step 4: Simplify right side
    405,857.48x = 132,264,289,941.81
  5. Step 5: Solve for x
    x = 132,264,289,941.81/405,857.48
  6. Step 6: Final answer
    x = 325,888.51

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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.