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Finding the Fourth Proportional to 13,245,842.20, 19,868,763.30 and 13,245,842.20

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Solution

The fourth proportional to 13,245,842.20, 19,868,763.30 and 13,245,842.20 is: 19,868,763.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,245,842.20 : 19,868,763.30 = 13,245,842.20 : x
  2. Step 2: Convert to fraction form
    13,245,842.20/19,868,763.30 = 13,245,842.20/x
  3. Step 3: Cross multiply
    13,245,842.20x = 19,868,763.30 × 13,245,842.20
  4. Step 4: Simplify right side
    13,245,842.20x = 263,178,503,380,951.25
  5. Step 5: Solve for x
    x = 263,178,503,380,951.25/13,245,842.20
  6. Step 6: Final answer
    x = 19,868,763.30

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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.