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Finding the Fourth Proportional to 1,266,539.78, 1,747,764.60 and 693,583.04

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Solution

The fourth proportional to 1,266,539.78, 1,747,764.60 and 693,583.04 is: 957,111.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266,539.78 : 1,747,764.60 = 693,583.04 : x
  2. Step 2: Convert to fraction form
    1,266,539.78/1,747,764.60 = 693,583.04/x
  3. Step 3: Cross multiply
    1,266,539.78x = 1,747,764.60 × 693,583.04
  4. Step 4: Simplify right side
    1,266,539.78x = 1,212,219,884,472.38
  5. Step 5: Solve for x
    x = 1,212,219,884,472.38/1,266,539.78
  6. Step 6: Final answer
    x = 957,111.58

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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.