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Finding the Fourth Proportional to 1,764,744.56, 2,640,436.80 and 1,045,472.39

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Solution

The fourth proportional to 1,764,744.56, 2,640,436.80 and 1,045,472.39 is: 1,564,251.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,764,744.56 : 2,640,436.80 = 1,045,472.39 : x
  2. Step 2: Convert to fraction form
    1,764,744.56/2,640,436.80 = 1,045,472.39/x
  3. Step 3: Cross multiply
    1,764,744.56x = 2,640,436.80 × 1,045,472.39
  4. Step 4: Simplify right side
    1,764,744.56x = 2,760,503,771,939.95
  5. Step 5: Solve for x
    x = 2,760,503,771,939.95/1,764,744.56
  6. Step 6: Final answer
    x = 1,564,251.19

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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.