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Finding the Fourth Proportional to 13,288,776.20, 18,616,883.80 and 13,288,776.20

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Solution

The fourth proportional to 13,288,776.20, 18,616,883.80 and 13,288,776.20 is: 18,616,883.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,288,776.20 : 18,616,883.80 = 13,288,776.20 : x
  2. Step 2: Convert to fraction form
    13,288,776.20/18,616,883.80 = 13,288,776.20/x
  3. Step 3: Cross multiply
    13,288,776.20x = 18,616,883.80 × 13,288,776.20
  4. Step 4: Simplify right side
    13,288,776.20x = 247,395,602,359,605.56
  5. Step 5: Solve for x
    x = 247,395,602,359,605.56/13,288,776.20
  6. Step 6: Final answer
    x = 18,616,883.80

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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.