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Finding the Fourth Proportional to 7,735,951.80, 11,603,927.70 and 1,978,674.30

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Solution

The fourth proportional to 7,735,951.80, 11,603,927.70 and 1,978,674.30 is: 2,968,011.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,735,951.80 : 11,603,927.70 = 1,978,674.30 : x
  2. Step 2: Convert to fraction form
    7,735,951.80/11,603,927.70 = 1,978,674.30/x
  3. Step 3: Cross multiply
    7,735,951.80x = 11,603,927.70 × 1,978,674.30
  4. Step 4: Simplify right side
    7,735,951.80x = 22,960,393,519,048.11
  5. Step 5: Solve for x
    x = 22,960,393,519,048.11/7,735,951.80
  6. Step 6: Final answer
    x = 2,968,011.45

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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.