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Finding the Fourth Proportional to 1,379,237,320.80, 1,935,769,543.20 and 1,379,237,320.80

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Solution

The fourth proportional to 1,379,237,320.80, 1,935,769,543.20 and 1,379,237,320.80 is: 1,935,769,543.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,379,237,320.80 : 1,935,769,543.20 = 1,379,237,320.80 : x
  2. Step 2: Convert to fraction form
    1,379,237,320.80/1,935,769,543.20 = 1,379,237,320.80/x
  3. Step 3: Cross multiply
    1,379,237,320.80x = 1,935,769,543.20 × 1,379,237,320.80
  4. Step 4: Simplify right side
    1,379,237,320.80x = 2,669,885,598,449,408,000
  5. Step 5: Solve for x
    x = 2,669,885,598,449,408,000/1,379,237,320.80
  6. Step 6: Final answer
    x = 1,935,769,543.20

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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.