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Finding the Fourth Proportional to 419,908,049.40, 629,862,074.10 and 147,180,401.40

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Solution

The fourth proportional to 419,908,049.40, 629,862,074.10 and 147,180,401.40 is: 220,770,602.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,908,049.40 : 629,862,074.10 = 147,180,401.40 : x
  2. Step 2: Convert to fraction form
    419,908,049.40/629,862,074.10 = 147,180,401.40/x
  3. Step 3: Cross multiply
    419,908,049.40x = 629,862,074.10 × 147,180,401.40
  4. Step 4: Simplify right side
    419,908,049.40x = 92,703,352,892,674,544
  5. Step 5: Solve for x
    x = 92,703,352,892,674,544/419,908,049.40
  6. Step 6: Final answer
    x = 220,770,602.10

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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.