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Finding the Fourth Proportional to 2,019,797,999.40, 3,029,696,999.10 and 870,940,655.40

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Solution

The fourth proportional to 2,019,797,999.40, 3,029,696,999.10 and 870,940,655.40 is: 1,306,410,983.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,019,797,999.40 : 3,029,696,999.10 = 870,940,655.40 : x
  2. Step 2: Convert to fraction form
    2,019,797,999.40/3,029,696,999.10 = 870,940,655.40/x
  3. Step 3: Cross multiply
    2,019,797,999.40x = 3,029,696,999.10 × 870,940,655.40
  4. Step 4: Simplify right side
    2,019,797,999.40x = 2,638,686,290,059,567,104
  5. Step 5: Solve for x
    x = 2,638,686,290,059,567,104/2,019,797,999.40
  6. Step 6: Final answer
    x = 1,306,410,983.10

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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.