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Finding the Fourth Proportional to 939,517,600.80, 1,409,276,401.20 and 939,517,600.80

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Solution

The fourth proportional to 939,517,600.80, 1,409,276,401.20 and 939,517,600.80 is: 1,409,276,401.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,517,600.80 : 1,409,276,401.20 = 939,517,600.80 : x
  2. Step 2: Convert to fraction form
    939,517,600.80/1,409,276,401.20 = 939,517,600.80/x
  3. Step 3: Cross multiply
    939,517,600.80x = 1,409,276,401.20 × 939,517,600.80
  4. Step 4: Simplify right side
    939,517,600.80x = 1,324,039,983,319,482,112
  5. Step 5: Solve for x
    x = 1,324,039,983,319,482,112/939,517,600.80
  6. Step 6: Final answer
    x = 1,409,276,401.20

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1.5x scale

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.