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Finding the Fourth Proportional to 11,892,743.40, 16,661,038.20 and 11,892,743.40

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Solution

The fourth proportional to 11,892,743.40, 16,661,038.20 and 11,892,743.40 is: 16,661,038.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,892,743.40 : 16,661,038.20 = 11,892,743.40 : x
  2. Step 2: Convert to fraction form
    11,892,743.40/16,661,038.20 = 11,892,743.40/x
  3. Step 3: Cross multiply
    11,892,743.40x = 16,661,038.20 × 11,892,743.40
  4. Step 4: Simplify right side
    11,892,743.40x = 198,145,452,090,197.88
  5. Step 5: Solve for x
    x = 198,145,452,090,197.88/11,892,743.40
  6. Step 6: Final answer
    x = 16,661,038.20

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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.