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Finding the Fourth Proportional to 6,902,468.40, 10,353,605.40 and 3,115,945.20

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Solution

The fourth proportional to 6,902,468.40, 10,353,605.40 and 3,115,945.20 is: 4,673,873.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,902,468.40 : 10,353,605.40 = 3,115,945.20 : x
  2. Step 2: Convert to fraction form
    6,902,468.40/10,353,605.40 = 3,115,945.20/x
  3. Step 3: Cross multiply
    6,902,468.40x = 10,353,605.40 × 3,115,945.20
  4. Step 4: Simplify right side
    6,902,468.40x = 32,261,267,048,824.08
  5. Step 5: Solve for x
    x = 32,261,267,048,824.08/6,902,468.40
  6. Step 6: Final answer
    x = 4,673,873.92

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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.