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Finding the Fourth Proportional to 3,485,381,997.90, 4,891,779,197.70 and 3,485,381,997.90

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Solution

The fourth proportional to 3,485,381,997.90, 4,891,779,197.70 and 3,485,381,997.90 is: 4,891,779,197.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,485,381,997.90 : 4,891,779,197.70 = 3,485,381,997.90 : x
  2. Step 2: Convert to fraction form
    3,485,381,997.90/4,891,779,197.70 = 3,485,381,997.90/x
  3. Step 3: Cross multiply
    3,485,381,997.90x = 4,891,779,197.70 × 3,485,381,997.90
  4. Step 4: Simplify right side
    3,485,381,997.90x = 17,049,719,153,365,284,864
  5. Step 5: Solve for x
    x = 17,049,719,153,365,284,864/3,485,381,997.90
  6. Step 6: Final answer
    x = 4,891,779,197.70

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1.5x scale

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.