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Finding the Fourth Proportional to 1,260,219,786.95, 1,890,329,680.43 and 1,260,219,786.95

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Solution

The fourth proportional to 1,260,219,786.95, 1,890,329,680.43 and 1,260,219,786.95 is: 1,890,329,680.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,219,786.95 : 1,890,329,680.43 = 1,260,219,786.95 : x
  2. Step 2: Convert to fraction form
    1,260,219,786.95/1,890,329,680.43 = 1,260,219,786.95/x
  3. Step 3: Cross multiply
    1,260,219,786.95x = 1,890,329,680.43 × 1,260,219,786.95
  4. Step 4: Simplify right side
    1,260,219,786.95x = 2,382,230,867,136,756,224
  5. Step 5: Solve for x
    x = 2,382,230,867,136,756,224/1,260,219,786.95
  6. Step 6: Final answer
    x = 1,890,329,680.43

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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.