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Finding the Fourth Proportional to 863,984.70, 1,295,977.05 and 769,506.30

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Solution

The fourth proportional to 863,984.70, 1,295,977.05 and 769,506.30 is: 1,154,259.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,984.70 : 1,295,977.05 = 769,506.30 : x
  2. Step 2: Convert to fraction form
    863,984.70/1,295,977.05 = 769,506.30/x
  3. Step 3: Cross multiply
    863,984.70x = 1,295,977.05 × 769,506.30
  4. Step 4: Simplify right side
    863,984.70x = 997,262,504,630.42
  5. Step 5: Solve for x
    x = 997,262,504,630.42/863,984.70
  6. Step 6: Final answer
    x = 1,154,259.45

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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.