Home / 18,911,231,996.80-28,366,847,995.20-8,591,671,292.80

Finding the Fourth Proportional to 18,911,231,996.80, 28,366,847,995.20 and 8,591,671,292.80

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Solution

The fourth proportional to 18,911,231,996.80, 28,366,847,995.20 and 8,591,671,292.80 is: 12,887,506,939.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,911,231,996.80 : 28,366,847,995.20 = 8,591,671,292.80 : x
  2. Step 2: Convert to fraction form
    18,911,231,996.80/28,366,847,995.20 = 8,591,671,292.80/x
  3. Step 3: Cross multiply
    18,911,231,996.80x = 28,366,847,995.20 × 8,591,671,292.80
  4. Step 4: Simplify right side
    18,911,231,996.80x = 243,718,633,587,581,059,072
  5. Step 5: Solve for x
    x = 243,718,633,587,581,059,072/18,911,231,996.80
  6. Step 6: Final answer
    x = 12,887,506,939.20

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Double scale
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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.