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Finding the Fourth Proportional to 996,643.70, 1,494,965.55 and 728,954.90

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Solution

The fourth proportional to 996,643.70, 1,494,965.55 and 728,954.90 is: 1,093,432.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    996,643.70 : 1,494,965.55 = 728,954.90 : x
  2. Step 2: Convert to fraction form
    996,643.70/1,494,965.55 = 728,954.90/x
  3. Step 3: Cross multiply
    996,643.70x = 1,494,965.55 × 728,954.90
  4. Step 4: Simplify right side
    996,643.70x = 1,089,762,463,003.70
  5. Step 5: Solve for x
    x = 1,089,762,463,003.70/996,643.70
  6. Step 6: Final answer
    x = 1,093,432.35

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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.