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Finding the Fourth Proportional to 20,509,251.80, 30,763,877.70 and 20,509,251.80

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Solution

The fourth proportional to 20,509,251.80, 30,763,877.70 and 20,509,251.80 is: 30,763,877.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,509,251.80 : 30,763,877.70 = 20,509,251.80 : x
  2. Step 2: Convert to fraction form
    20,509,251.80/30,763,877.70 = 20,509,251.80/x
  3. Step 3: Cross multiply
    20,509,251.80x = 30,763,877.70 × 20,509,251.80
  4. Step 4: Simplify right side
    20,509,251.80x = 630,944,114,093,704.88
  5. Step 5: Solve for x
    x = 630,944,114,093,704.88/20,509,251.80
  6. Step 6: Final answer
    x = 30,763,877.70

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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.