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Finding the Fourth Proportional to 28,084,683.30, 39,431,930.70 and 28,084,683.30

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Solution

The fourth proportional to 28,084,683.30, 39,431,930.70 and 28,084,683.30 is: 39,431,930.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,084,683.30 : 39,431,930.70 = 28,084,683.30 : x
  2. Step 2: Convert to fraction form
    28,084,683.30/39,431,930.70 = 28,084,683.30/x
  3. Step 3: Cross multiply
    28,084,683.30x = 39,431,930.70 × 28,084,683.30
  4. Step 4: Simplify right side
    28,084,683.30x = 1,107,433,285,617,047.38
  5. Step 5: Solve for x
    x = 1,107,433,285,617,047.38/28,084,683.30
  6. Step 6: Final answer
    x = 39,431,930.70

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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.