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Finding the Fourth Proportional to 691,077.44, 953,665.44 and 389,264.96

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Solution

The fourth proportional to 691,077.44, 953,665.44 and 389,264.96 is: 537,173.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,077.44 : 953,665.44 = 389,264.96 : x
  2. Step 2: Convert to fraction form
    691,077.44/953,665.44 = 389,264.96/x
  3. Step 3: Cross multiply
    691,077.44x = 953,665.44 × 389,264.96
  4. Step 4: Simplify right side
    691,077.44x = 371,228,539,354.98
  5. Step 5: Solve for x
    x = 371,228,539,354.98/691,077.44
  6. Step 6: Final answer
    x = 537,173.58

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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.