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Finding the Fourth Proportional to 525,769.21, 725,561.85 and 284,051.65

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Solution

The fourth proportional to 525,769.21, 725,561.85 and 284,051.65 is: 391,991.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,769.21 : 725,561.85 = 284,051.65 : x
  2. Step 2: Convert to fraction form
    525,769.21/725,561.85 = 284,051.65/x
  3. Step 3: Cross multiply
    525,769.21x = 725,561.85 × 284,051.65
  4. Step 4: Simplify right side
    525,769.21x = 206,097,040,669.55
  5. Step 5: Solve for x
    x = 206,097,040,669.55/525,769.21
  6. Step 6: Final answer
    x = 391,991.46

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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.