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Finding the Fourth Proportional to 1,889,571,313.80, 2,639,277,639 and 1,889,571,313.80

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Solution

The fourth proportional to 1,889,571,313.80, 2,639,277,639 and 1,889,571,313.80 is: 2,639,277,639.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,889,571,313.80 : 2,639,277,639 = 1,889,571,313.80 : x
  2. Step 2: Convert to fraction form
    1,889,571,313.80/2,639,277,639 = 1,889,571,313.80/x
  3. Step 3: Cross multiply
    1,889,571,313.80x = 2,639,277,639 × 1,889,571,313.80
  4. Step 4: Simplify right side
    1,889,571,313.80x = 4,987,103,315,808,191,488
  5. Step 5: Solve for x
    x = 4,987,103,315,808,191,488/1,889,571,313.80
  6. Step 6: Final answer
    x = 2,639,277,639.00

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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.