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Finding the Fourth Proportional to 3,672,913.05, 5,509,369.58 and 2,665,143.45

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Solution

The fourth proportional to 3,672,913.05, 5,509,369.58 and 2,665,143.45 is: 3,997,715.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,672,913.05 : 5,509,369.58 = 2,665,143.45 : x
  2. Step 2: Convert to fraction form
    3,672,913.05/5,509,369.58 = 2,665,143.45/x
  3. Step 3: Cross multiply
    3,672,913.05x = 5,509,369.58 × 2,665,143.45
  4. Step 4: Simplify right side
    3,672,913.05x = 14,683,260,236,440.54
  5. Step 5: Solve for x
    x = 14,683,260,236,440.54/3,672,913.05
  6. Step 6: Final answer
    x = 3,997,715.18

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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.