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Finding the Fourth Proportional to 587,955,287.20, 881,932,930.80 and 412,603,376.80

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Solution

The fourth proportional to 587,955,287.20, 881,932,930.80 and 412,603,376.80 is: 618,905,065.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,955,287.20 : 881,932,930.80 = 412,603,376.80 : x
  2. Step 2: Convert to fraction form
    587,955,287.20/881,932,930.80 = 412,603,376.80/x
  3. Step 3: Cross multiply
    587,955,287.20x = 881,932,930.80 × 412,603,376.80
  4. Step 4: Simplify right side
    587,955,287.20x = 363,888,505,359,200,704
  5. Step 5: Solve for x
    x = 363,888,505,359,200,704/587,955,287.20
  6. Step 6: Final answer
    x = 618,905,065.20

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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.