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Finding the Fourth Proportional to 2,936,780.40, 4,120,940.40 and 2,936,780.40

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Solution

The fourth proportional to 2,936,780.40, 4,120,940.40 and 2,936,780.40 is: 4,120,940.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,936,780.40 : 4,120,940.40 = 2,936,780.40 : x
  2. Step 2: Convert to fraction form
    2,936,780.40/4,120,940.40 = 2,936,780.40/x
  3. Step 3: Cross multiply
    2,936,780.40x = 4,120,940.40 × 2,936,780.40
  4. Step 4: Simplify right side
    2,936,780.40x = 12,102,296,996,288.16
  5. Step 5: Solve for x
    x = 12,102,296,996,288.16/2,936,780.40
  6. Step 6: Final answer
    x = 4,120,940.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.