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Finding the Fourth Proportional to 12,305,429.55, 18,458,144.33 and 12,305,429.55

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Solution

The fourth proportional to 12,305,429.55, 18,458,144.33 and 12,305,429.55 is: 18,458,144.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,305,429.55 : 18,458,144.33 = 12,305,429.55 : x
  2. Step 2: Convert to fraction form
    12,305,429.55/18,458,144.33 = 12,305,429.55/x
  3. Step 3: Cross multiply
    12,305,429.55x = 18,458,144.33 × 12,305,429.55
  4. Step 4: Simplify right side
    12,305,429.55x = 227,135,394,615,019.81
  5. Step 5: Solve for x
    x = 227,135,394,615,019.81/12,305,429.55
  6. Step 6: Final answer
    x = 18,458,144.33

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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.