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Finding the Fourth Proportional to 7,777,369.60, 10,863,123.20 and 7,777,369.60

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Solution

The fourth proportional to 7,777,369.60, 10,863,123.20 and 7,777,369.60 is: 10,863,123.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,777,369.60 : 10,863,123.20 = 7,777,369.60 : x
  2. Step 2: Convert to fraction form
    7,777,369.60/10,863,123.20 = 7,777,369.60/x
  3. Step 3: Cross multiply
    7,777,369.60x = 10,863,123.20 × 7,777,369.60
  4. Step 4: Simplify right side
    7,777,369.60x = 84,486,524,136,734.70
  5. Step 5: Solve for x
    x = 84,486,524,136,734.70/7,777,369.60
  6. Step 6: Final answer
    x = 10,863,123.20

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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.