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Finding the Fourth Proportional to 1,992,908,906.10, 2,989,363,359.15 and 1,992,908,906.10

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Solution

The fourth proportional to 1,992,908,906.10, 2,989,363,359.15 and 1,992,908,906.10 is: 2,989,363,359.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992,908,906.10 : 2,989,363,359.15 = 1,992,908,906.10 : x
  2. Step 2: Convert to fraction form
    1,992,908,906.10/2,989,363,359.15 = 1,992,908,906.10/x
  3. Step 3: Cross multiply
    1,992,908,906.10x = 2,989,363,359.15 × 1,992,908,906.10
  4. Step 4: Simplify right side
    1,992,908,906.10x = 5,957,528,862,019,047,424
  5. Step 5: Solve for x
    x = 5,957,528,862,019,047,424/1,992,908,906.10
  6. Step 6: Final answer
    x = 2,989,363,359.15

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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.