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Finding the Fourth Proportional to 3,978,235.90, 5,971,527.72 and 3,525,722.38

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Solution

The fourth proportional to 3,978,235.90, 5,971,527.72 and 3,525,722.38 is: 5,292,282.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,978,235.90 : 5,971,527.72 = 3,525,722.38 : x
  2. Step 2: Convert to fraction form
    3,978,235.90/5,971,527.72 = 3,525,722.38/x
  3. Step 3: Cross multiply
    3,978,235.90x = 5,971,527.72 × 3,525,722.38
  4. Step 4: Simplify right side
    3,978,235.90x = 21,053,948,925,194.37
  5. Step 5: Solve for x
    x = 21,053,948,925,194.37/3,978,235.90
  6. Step 6: Final answer
    x = 5,292,282.67

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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.