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Finding the Fourth Proportional to 18,880,144,299.90, 28,265,796,891.45 and 18,880,144,299.90

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Solution

The fourth proportional to 18,880,144,299.90, 28,265,796,891.45 and 18,880,144,299.90 is: 28,265,796,891.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,880,144,299.90 : 28,265,796,891.45 = 18,880,144,299.90 : x
  2. Step 2: Convert to fraction form
    18,880,144,299.90/28,265,796,891.45 = 18,880,144,299.90/x
  3. Step 3: Cross multiply
    18,880,144,299.90x = 28,265,796,891.45 × 18,880,144,299.90
  4. Step 4: Simplify right side
    18,880,144,299.90x = 533,662,324,062,240,899,072
  5. Step 5: Solve for x
    x = 533,662,324,062,240,899,072/18,880,144,299.90
  6. Step 6: Final answer
    x = 28,265,796,891.45

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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.