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Finding the Fourth Proportional to 870,744,694.30, 1,222,486,309.70 and 870,744,694.30

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Solution

The fourth proportional to 870,744,694.30, 1,222,486,309.70 and 870,744,694.30 is: 1,222,486,309.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,744,694.30 : 1,222,486,309.70 = 870,744,694.30 : x
  2. Step 2: Convert to fraction form
    870,744,694.30/1,222,486,309.70 = 870,744,694.30/x
  3. Step 3: Cross multiply
    870,744,694.30x = 1,222,486,309.70 × 870,744,694.30
  4. Step 4: Simplify right side
    870,744,694.30x = 1,064,473,468,025,661,568
  5. Step 5: Solve for x
    x = 1,064,473,468,025,661,568/870,744,694.30
  6. Step 6: Final answer
    x = 1,222,486,309.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.