Home / 28,579,220,295.12-39,439,356,704.46-15,891,683,555.61

Finding the Fourth Proportional to 28,579,220,295.12, 39,439,356,704.46 and 15,891,683,555.61

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Solution

The fourth proportional to 28,579,220,295.12, 39,439,356,704.46 and 15,891,683,555.61 is: 21,930,541,488.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,579,220,295.12 : 39,439,356,704.46 = 15,891,683,555.61 : x
  2. Step 2: Convert to fraction form
    28,579,220,295.12/39,439,356,704.46 = 15,891,683,555.61/x
  3. Step 3: Cross multiply
    28,579,220,295.12x = 39,439,356,704.46 × 15,891,683,555.61
  4. Step 4: Simplify right side
    28,579,220,295.12x = 626,757,776,384,103,940,096
  5. Step 5: Solve for x
    x = 626,757,776,384,103,940,096/28,579,220,295.12
  6. Step 6: Final answer
    x = 21,930,541,488.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.