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Finding the Fourth Proportional to 910,647,620.40, 1,365,971,430.60 and 910,647,620.40

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Solution

The fourth proportional to 910,647,620.40, 1,365,971,430.60 and 910,647,620.40 is: 1,365,971,430.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,647,620.40 : 1,365,971,430.60 = 910,647,620.40 : x
  2. Step 2: Convert to fraction form
    910,647,620.40/1,365,971,430.60 = 910,647,620.40/x
  3. Step 3: Cross multiply
    910,647,620.40x = 1,365,971,430.60 × 910,647,620.40
  4. Step 4: Simplify right side
    910,647,620.40x = 1,243,918,632,810,273,536
  5. Step 5: Solve for x
    x = 1,243,918,632,810,273,536/910,647,620.40
  6. Step 6: Final answer
    x = 1,365,971,430.60

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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.