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Finding the Fourth Proportional to 622,912.10, 874,438.90 and 622,912.10

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Solution

The fourth proportional to 622,912.10, 874,438.90 and 622,912.10 is: 874,438.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,912.10 : 874,438.90 = 622,912.10 : x
  2. Step 2: Convert to fraction form
    622,912.10/874,438.90 = 622,912.10/x
  3. Step 3: Cross multiply
    622,912.10x = 874,438.90 × 622,912.10
  4. Step 4: Simplify right side
    622,912.10x = 544,698,571,520.69
  5. Step 5: Solve for x
    x = 544,698,571,520.69/622,912.10
  6. Step 6: Final answer
    x = 874,438.90

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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.