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Finding the Fourth Proportional to 20,234,535.70, 28,392,122.90 and 20,234,535.70

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Solution

The fourth proportional to 20,234,535.70, 28,392,122.90 and 20,234,535.70 is: 28,392,122.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,234,535.70 : 28,392,122.90 = 20,234,535.70 : x
  2. Step 2: Convert to fraction form
    20,234,535.70/28,392,122.90 = 20,234,535.70/x
  3. Step 3: Cross multiply
    20,234,535.70x = 28,392,122.90 × 20,234,535.70
  4. Step 4: Simplify right side
    20,234,535.70x = 574,501,424,418,837.50
  5. Step 5: Solve for x
    x = 574,501,424,418,837.50/20,234,535.70
  6. Step 6: Final answer
    x = 28,392,122.90

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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.