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Finding the Fourth Proportional to 5,787,673.92, 7,987,399.20 and 3,209,601.60

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Solution

The fourth proportional to 5,787,673.92, 7,987,399.20 and 3,209,601.60 is: 4,429,477.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,787,673.92 : 7,987,399.20 = 3,209,601.60 : x
  2. Step 2: Convert to fraction form
    5,787,673.92/7,987,399.20 = 3,209,601.60/x
  3. Step 3: Cross multiply
    5,787,673.92x = 7,987,399.20 × 3,209,601.60
  4. Step 4: Simplify right side
    5,787,673.92x = 25,636,369,252,158.72
  5. Step 5: Solve for x
    x = 25,636,369,252,158.72/5,787,673.92
  6. Step 6: Final answer
    x = 4,429,477.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.