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Finding the Fourth Proportional to 13,188,499.80, 19,782,749.70 and 13,188,499.80

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Solution

The fourth proportional to 13,188,499.80, 19,782,749.70 and 13,188,499.80 is: 19,782,749.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188,499.80 : 19,782,749.70 = 13,188,499.80 : x
  2. Step 2: Convert to fraction form
    13,188,499.80/19,782,749.70 = 13,188,499.80/x
  3. Step 3: Cross multiply
    13,188,499.80x = 19,782,749.70 × 13,188,499.80
  4. Step 4: Simplify right side
    13,188,499.80x = 260,904,790,461,900.06
  5. Step 5: Solve for x
    x = 260,904,790,461,900.06/13,188,499.80
  6. Step 6: Final answer
    x = 19,782,749.70

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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.