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Finding the Fourth Proportional to 620,533,115.20, 930,799,672.80 and 362,040,212.80

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Solution

The fourth proportional to 620,533,115.20, 930,799,672.80 and 362,040,212.80 is: 543,060,319.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,533,115.20 : 930,799,672.80 = 362,040,212.80 : x
  2. Step 2: Convert to fraction form
    620,533,115.20/930,799,672.80 = 362,040,212.80/x
  3. Step 3: Cross multiply
    620,533,115.20x = 930,799,672.80 × 362,040,212.80
  4. Step 4: Simplify right side
    620,533,115.20x = 336,986,911,614,682,368
  5. Step 5: Solve for x
    x = 336,986,911,614,682,368/620,533,115.20
  6. Step 6: Final answer
    x = 543,060,319.20

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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.