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Finding the Fourth Proportional to 2,865,861.89, 3,954,889.25 and 1,576,674.59

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Solution

The fourth proportional to 2,865,861.89, 3,954,889.25 and 1,576,674.59 is: 2,175,810.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,865,861.89 : 3,954,889.25 = 1,576,674.59 : x
  2. Step 2: Convert to fraction form
    2,865,861.89/3,954,889.25 = 1,576,674.59/x
  3. Step 3: Cross multiply
    2,865,861.89x = 3,954,889.25 × 1,576,674.59
  4. Step 4: Simplify right side
    2,865,861.89x = 6,235,573,378,855.79
  5. Step 5: Solve for x
    x = 6,235,573,378,855.79/2,865,861.89
  6. Step 6: Final answer
    x = 2,175,810.84

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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.