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Finding the Fourth Proportional to 12,854,720.80, 19,282,081.20 and 12,854,720.80

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Solution

The fourth proportional to 12,854,720.80, 19,282,081.20 and 12,854,720.80 is: 19,282,081.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,854,720.80 : 19,282,081.20 = 12,854,720.80 : x
  2. Step 2: Convert to fraction form
    12,854,720.80/19,282,081.20 = 12,854,720.80/x
  3. Step 3: Cross multiply
    12,854,720.80x = 19,282,081.20 × 12,854,720.80
  4. Step 4: Simplify right side
    12,854,720.80x = 247,865,770,268,928.97
  5. Step 5: Solve for x
    x = 247,865,770,268,928.97/12,854,720.80
  6. Step 6: Final answer
    x = 19,282,081.20

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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.