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Finding the Fourth Proportional to 443,842.25, 666,237.23 and 191,247.40

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Solution

The fourth proportional to 443,842.25, 666,237.23 and 191,247.40 is: 287,075.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,842.25 : 666,237.23 = 191,247.40 : x
  2. Step 2: Convert to fraction form
    443,842.25/666,237.23 = 191,247.40/x
  3. Step 3: Cross multiply
    443,842.25x = 666,237.23 × 191,247.40
  4. Step 4: Simplify right side
    443,842.25x = 127,416,135,398.87
  5. Step 5: Solve for x
    x = 127,416,135,398.87/443,842.25
  6. Step 6: Final answer
    x = 287,075.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.