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Finding the Fourth Proportional to 12,693,766.90, 19,040,650.35 and 12,693,766.90

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Solution

The fourth proportional to 12,693,766.90, 19,040,650.35 and 12,693,766.90 is: 19,040,650.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,693,766.90 : 19,040,650.35 = 12,693,766.90 : x
  2. Step 2: Convert to fraction form
    12,693,766.90/19,040,650.35 = 12,693,766.90/x
  3. Step 3: Cross multiply
    12,693,766.90x = 19,040,650.35 × 12,693,766.90
  4. Step 4: Simplify right side
    12,693,766.90x = 241,697,577,167,303.44
  5. Step 5: Solve for x
    x = 241,697,577,167,303.44/12,693,766.90
  6. Step 6: Final answer
    x = 19,040,650.35

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Similar ratio
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1.5x scale

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.