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Finding the Fourth Proportional to 20,571,691.70, 30,857,537.55 and 20,571,691.70

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Solution

The fourth proportional to 20,571,691.70, 30,857,537.55 and 20,571,691.70 is: 30,857,537.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,571,691.70 : 30,857,537.55 = 20,571,691.70 : x
  2. Step 2: Convert to fraction form
    20,571,691.70/30,857,537.55 = 20,571,691.70/x
  3. Step 3: Cross multiply
    20,571,691.70x = 30,857,537.55 × 20,571,691.70
  4. Step 4: Simplify right side
    20,571,691.70x = 634,791,749,099,773.38
  5. Step 5: Solve for x
    x = 634,791,749,099,773.38/20,571,691.70
  6. Step 6: Final answer
    x = 30,857,537.55

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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.