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Finding the Fourth Proportional to 756,908,815.20, 1,135,363,222.80 and 756,908,815.20

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Solution

The fourth proportional to 756,908,815.20, 1,135,363,222.80 and 756,908,815.20 is: 1,135,363,222.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,908,815.20 : 1,135,363,222.80 = 756,908,815.20 : x
  2. Step 2: Convert to fraction form
    756,908,815.20/1,135,363,222.80 = 756,908,815.20/x
  3. Step 3: Cross multiply
    756,908,815.20x = 1,135,363,222.80 × 756,908,815.20
  4. Step 4: Simplify right side
    756,908,815.20x = 859,366,431,791,201,664
  5. Step 5: Solve for x
    x = 859,366,431,791,201,664/756,908,815.20
  6. Step 6: Final answer
    x = 1,135,363,222.80

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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.