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Finding the Fourth Proportional to 12,756,555,422.80, 17,815,641,945.20 and 12,756,555,422.80

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Solution

The fourth proportional to 12,756,555,422.80, 17,815,641,945.20 and 12,756,555,422.80 is: 17,815,641,945.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,756,555,422.80 : 17,815,641,945.20 = 12,756,555,422.80 : x
  2. Step 2: Convert to fraction form
    12,756,555,422.80/17,815,641,945.20 = 12,756,555,422.80/x
  3. Step 3: Cross multiply
    12,756,555,422.80x = 17,815,641,945.20 × 12,756,555,422.80
  4. Step 4: Simplify right side
    12,756,555,422.80x = 227,266,223,866,704,199,680
  5. Step 5: Solve for x
    x = 227,266,223,866,704,199,680/12,756,555,422.80
  6. Step 6: Final answer
    x = 17,815,641,945.20

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Double scale
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1.5x scale

Why These Related Problems?

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