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Finding the Fourth Proportional to 199,287,361.80, 298,931,042.70 and 70,040,910.60

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Solution

The fourth proportional to 199,287,361.80, 298,931,042.70 and 70,040,910.60 is: 105,061,365.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,287,361.80 : 298,931,042.70 = 70,040,910.60 : x
  2. Step 2: Convert to fraction form
    199,287,361.80/298,931,042.70 = 70,040,910.60/x
  3. Step 3: Cross multiply
    199,287,361.80x = 298,931,042.70 × 70,040,910.60
  4. Step 4: Simplify right side
    199,287,361.80x = 20,937,402,437,315,480
  5. Step 5: Solve for x
    x = 20,937,402,437,315,480/199,287,361.80
  6. Step 6: Final answer
    x = 105,061,365.90

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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.