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Finding the Fourth Proportional to 3,969,763,666.40, 5,954,645,499.60 and 3,969,763,666.40

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Solution

The fourth proportional to 3,969,763,666.40, 5,954,645,499.60 and 3,969,763,666.40 is: 5,954,645,499.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,969,763,666.40 : 5,954,645,499.60 = 3,969,763,666.40 : x
  2. Step 2: Convert to fraction form
    3,969,763,666.40/5,954,645,499.60 = 3,969,763,666.40/x
  3. Step 3: Cross multiply
    3,969,763,666.40x = 5,954,645,499.60 × 3,969,763,666.40
  4. Step 4: Simplify right side
    3,969,763,666.40x = 23,638,535,350,604,357,632
  5. Step 5: Solve for x
    x = 23,638,535,350,604,357,632/3,969,763,666.40
  6. Step 6: Final answer
    x = 5,954,645,499.60

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Double scale
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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.