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Finding the Fourth Proportional to 1,274,749,666.80, 1,909,101,191.40 and 1,274,749,666.80

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Solution

The fourth proportional to 1,274,749,666.80, 1,909,101,191.40 and 1,274,749,666.80 is: 1,909,101,191.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,274,749,666.80 : 1,909,101,191.40 = 1,274,749,666.80 : x
  2. Step 2: Convert to fraction form
    1,274,749,666.80/1,909,101,191.40 = 1,274,749,666.80/x
  3. Step 3: Cross multiply
    1,274,749,666.80x = 1,909,101,191.40 × 1,274,749,666.80
  4. Step 4: Simplify right side
    1,274,749,666.80x = 2,433,626,107,624,632,832
  5. Step 5: Solve for x
    x = 2,433,626,107,624,632,832/1,274,749,666.80
  6. Step 6: Final answer
    x = 1,909,101,191.40

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1.5x scale

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.