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Finding the Fourth Proportional to 13,212,606.30, 19,787,416.65 and 13,212,606.30

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Solution

The fourth proportional to 13,212,606.30, 19,787,416.65 and 13,212,606.30 is: 19,787,416.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,212,606.30 : 19,787,416.65 = 13,212,606.30 : x
  2. Step 2: Convert to fraction form
    13,212,606.30/19,787,416.65 = 13,212,606.30/x
  3. Step 3: Cross multiply
    13,212,606.30x = 19,787,416.65 × 13,212,606.30
  4. Step 4: Simplify right side
    13,212,606.30x = 261,443,345,890,514.88
  5. Step 5: Solve for x
    x = 261,443,345,890,514.88/13,212,606.30
  6. Step 6: Final answer
    x = 19,787,416.65

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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.