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Finding the Fourth Proportional to 1,260,219,653.45, 1,890,329,480.18 and 1,260,219,653.45

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Solution

The fourth proportional to 1,260,219,653.45, 1,890,329,480.18 and 1,260,219,653.45 is: 1,890,329,480.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,219,653.45 : 1,890,329,480.18 = 1,260,219,653.45 : x
  2. Step 2: Convert to fraction form
    1,260,219,653.45/1,890,329,480.18 = 1,260,219,653.45/x
  3. Step 3: Cross multiply
    1,260,219,653.45x = 1,890,329,480.18 × 1,260,219,653.45
  4. Step 4: Simplify right side
    1,260,219,653.45x = 2,382,230,362,418,758,656
  5. Step 5: Solve for x
    x = 2,382,230,362,418,758,656/1,260,219,653.45
  6. Step 6: Final answer
    x = 1,890,329,480.18

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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.