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Finding the Fourth Proportional to 18,536,611.10, 27,804,916.65 and 12,797,048.30

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Solution

The fourth proportional to 18,536,611.10, 27,804,916.65 and 12,797,048.30 is: 19,195,572.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,536,611.10 : 27,804,916.65 = 12,797,048.30 : x
  2. Step 2: Convert to fraction form
    18,536,611.10/27,804,916.65 = 12,797,048.30/x
  3. Step 3: Cross multiply
    18,536,611.10x = 27,804,916.65 × 12,797,048.30
  4. Step 4: Simplify right side
    18,536,611.10x = 355,820,861,347,524.19
  5. Step 5: Solve for x
    x = 355,820,861,347,524.19/18,536,611.10
  6. Step 6: Final answer
    x = 19,195,572.45

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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.