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Finding the Fourth Proportional to 13,208,540.40, 19,812,810.60 and 13,208,540.40

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Solution

The fourth proportional to 13,208,540.40, 19,812,810.60 and 13,208,540.40 is: 19,812,810.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,208,540.40 : 19,812,810.60 = 13,208,540.40 : x
  2. Step 2: Convert to fraction form
    13,208,540.40/19,812,810.60 = 13,208,540.40/x
  3. Step 3: Cross multiply
    13,208,540.40x = 19,812,810.60 × 13,208,540.40
  4. Step 4: Simplify right side
    13,208,540.40x = 261,698,309,247,648.28
  5. Step 5: Solve for x
    x = 261,698,309,247,648.28/13,208,540.40
  6. Step 6: Final answer
    x = 19,812,810.60

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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.