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Finding the Fourth Proportional to 842,936.40, 1,264,404.60 and 842,936.40

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Solution

The fourth proportional to 842,936.40, 1,264,404.60 and 842,936.40 is: 1,264,404.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,936.40 : 1,264,404.60 = 842,936.40 : x
  2. Step 2: Convert to fraction form
    842,936.40/1,264,404.60 = 842,936.40/x
  3. Step 3: Cross multiply
    842,936.40x = 1,264,404.60 × 842,936.40
  4. Step 4: Simplify right side
    842,936.40x = 1,065,812,661,667.44
  5. Step 5: Solve for x
    x = 1,065,812,661,667.44/842,936.40
  6. Step 6: Final answer
    x = 1,264,404.60

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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.