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Finding the Fourth Proportional to 3,957,409.60, 5,557,169.60 and 3,957,409.60

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Solution

The fourth proportional to 3,957,409.60, 5,557,169.60 and 3,957,409.60 is: 5,557,169.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,957,409.60 : 5,557,169.60 = 3,957,409.60 : x
  2. Step 2: Convert to fraction form
    3,957,409.60/5,557,169.60 = 3,957,409.60/x
  3. Step 3: Cross multiply
    3,957,409.60x = 5,557,169.60 × 3,957,409.60
  4. Step 4: Simplify right side
    3,957,409.60x = 21,991,996,323,868.16
  5. Step 5: Solve for x
    x = 21,991,996,323,868.16/3,957,409.60
  6. Step 6: Final answer
    x = 5,557,169.60

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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.