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Finding the Fourth Proportional to 980,179,477.20, 1,373,271,634.80 and 980,179,477.20

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Solution

The fourth proportional to 980,179,477.20, 1,373,271,634.80 and 980,179,477.20 is: 1,373,271,634.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,179,477.20 : 1,373,271,634.80 = 980,179,477.20 : x
  2. Step 2: Convert to fraction form
    980,179,477.20/1,373,271,634.80 = 980,179,477.20/x
  3. Step 3: Cross multiply
    980,179,477.20x = 1,373,271,634.80 × 980,179,477.20
  4. Step 4: Simplify right side
    980,179,477.20x = 1,346,052,673,051,853,312
  5. Step 5: Solve for x
    x = 1,346,052,673,051,853,312/980,179,477.20
  6. Step 6: Final answer
    x = 1,373,271,634.80

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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.