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Finding the Fourth Proportional to 19,809,667.80, 27,783,923.40 and 19,809,667.80

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Solution

The fourth proportional to 19,809,667.80, 27,783,923.40 and 19,809,667.80 is: 27,783,923.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,809,667.80 : 27,783,923.40 = 19,809,667.80 : x
  2. Step 2: Convert to fraction form
    19,809,667.80/27,783,923.40 = 19,809,667.80/x
  3. Step 3: Cross multiply
    19,809,667.80x = 27,783,923.40 × 19,809,667.80
  4. Step 4: Simplify right side
    19,809,667.80x = 550,390,292,734,646.50
  5. Step 5: Solve for x
    x = 550,390,292,734,646.50/19,809,667.80
  6. Step 6: Final answer
    x = 27,783,923.40

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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.