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Finding the Fourth Proportional to 1,266,605.56, 1,747,921.26 and 693,649.72

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Solution

The fourth proportional to 1,266,605.56, 1,747,921.26 and 693,649.72 is: 957,239.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266,605.56 : 1,747,921.26 = 693,649.72 : x
  2. Step 2: Convert to fraction form
    1,266,605.56/1,747,921.26 = 693,649.72/x
  3. Step 3: Cross multiply
    1,266,605.56x = 1,747,921.26 × 693,649.72
  4. Step 4: Simplify right side
    1,266,605.56x = 1,212,445,092,581.05
  5. Step 5: Solve for x
    x = 1,212,445,092,581.05/1,266,605.56
  6. Step 6: Final answer
    x = 957,239.67

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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.