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Finding the Fourth Proportional to 28,085,859.60, 39,373,287.60 and 28,085,859.60

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Solution

The fourth proportional to 28,085,859.60, 39,373,287.60 and 28,085,859.60 is: 39,373,287.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,085,859.60 : 39,373,287.60 = 28,085,859.60 : x
  2. Step 2: Convert to fraction form
    28,085,859.60/39,373,287.60 = 28,085,859.60/x
  3. Step 3: Cross multiply
    28,085,859.60x = 39,373,287.60 × 28,085,859.60
  4. Step 4: Simplify right side
    28,085,859.60x = 1,105,832,627,524,021
  5. Step 5: Solve for x
    x = 1,105,832,627,524,021/28,085,859.60
  6. Step 6: Final answer
    x = 39,373,287.60

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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.