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Finding the Fourth Proportional to 14,615,139.70, 20,494,787.90 and 14,615,139.70

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Solution

The fourth proportional to 14,615,139.70, 20,494,787.90 and 14,615,139.70 is: 20,494,787.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,615,139.70 : 20,494,787.90 = 14,615,139.70 : x
  2. Step 2: Convert to fraction form
    14,615,139.70/20,494,787.90 = 14,615,139.70/x
  3. Step 3: Cross multiply
    14,615,139.70x = 20,494,787.90 × 14,615,139.70
  4. Step 4: Simplify right side
    14,615,139.70x = 299,534,188,280,369.56
  5. Step 5: Solve for x
    x = 299,534,188,280,369.56/14,615,139.70
  6. Step 6: Final answer
    x = 20,494,787.90

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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.