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Finding the Fourth Proportional to 494,420.90, 693,763.90 and 494,420.90

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Solution

The fourth proportional to 494,420.90, 693,763.90 and 494,420.90 is: 693,763.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,420.90 : 693,763.90 = 494,420.90 : x
  2. Step 2: Convert to fraction form
    494,420.90/693,763.90 = 494,420.90/x
  3. Step 3: Cross multiply
    494,420.90x = 693,763.90 × 494,420.90
  4. Step 4: Simplify right side
    494,420.90x = 343,011,371,825.51
  5. Step 5: Solve for x
    x = 343,011,371,825.51/494,420.90
  6. Step 6: Final answer
    x = 693,763.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.