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Finding the Fourth Proportional to 445,888,515.20, 668,832,772.80 and 445,888,515.20

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Solution

The fourth proportional to 445,888,515.20, 668,832,772.80 and 445,888,515.20 is: 668,832,772.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,888,515.20 : 668,832,772.80 = 445,888,515.20 : x
  2. Step 2: Convert to fraction form
    445,888,515.20/668,832,772.80 = 445,888,515.20/x
  3. Step 3: Cross multiply
    445,888,515.20x = 668,832,772.80 × 445,888,515.20
  4. Step 4: Simplify right side
    445,888,515.20x = 298,224,851,980,890,944
  5. Step 5: Solve for x
    x = 298,224,851,980,890,944/445,888,515.20
  6. Step 6: Final answer
    x = 668,832,772.80

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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.