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Finding the Fourth Proportional to 949,969,280.80, 1,424,953,921.20 and 949,969,280.80

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Solution

The fourth proportional to 949,969,280.80, 1,424,953,921.20 and 949,969,280.80 is: 1,424,953,921.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    949,969,280.80 : 1,424,953,921.20 = 949,969,280.80 : x
  2. Step 2: Convert to fraction form
    949,969,280.80/1,424,953,921.20 = 949,969,280.80/x
  3. Step 3: Cross multiply
    949,969,280.80x = 1,424,953,921.20 × 949,969,280.80
  4. Step 4: Simplify right side
    949,969,280.80x = 1,353,662,451,695,503,872
  5. Step 5: Solve for x
    x = 1,353,662,451,695,503,872/949,969,280.80
  6. Step 6: Final answer
    x = 1,424,953,921.20

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Similar ratio
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1.5x scale

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.