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Finding the Fourth Proportional to 1,274,749,672.80, 1,909,101,200.40 and 1,274,749,672.80

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Solution

The fourth proportional to 1,274,749,672.80, 1,909,101,200.40 and 1,274,749,672.80 is: 1,909,101,200.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,274,749,672.80 : 1,909,101,200.40 = 1,274,749,672.80 : x
  2. Step 2: Convert to fraction form
    1,274,749,672.80/1,909,101,200.40 = 1,274,749,672.80/x
  3. Step 3: Cross multiply
    1,274,749,672.80x = 1,909,101,200.40 × 1,274,749,672.80
  4. Step 4: Simplify right side
    1,274,749,672.80x = 2,433,626,130,551,987,200
  5. Step 5: Solve for x
    x = 2,433,626,130,551,987,200/1,274,749,672.80
  6. Step 6: Final answer
    x = 1,909,101,200.40

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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.