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Finding the Fourth Proportional to 698,228.88, 963,556.25 and 392,305.25

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Solution

The fourth proportional to 698,228.88, 963,556.25 and 392,305.25 is: 541,381.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,228.88 : 963,556.25 = 392,305.25 : x
  2. Step 2: Convert to fraction form
    698,228.88/963,556.25 = 392,305.25/x
  3. Step 3: Cross multiply
    698,228.88x = 963,556.25 × 392,305.25
  4. Step 4: Simplify right side
    698,228.88x = 378,008,168,766.01
  5. Step 5: Solve for x
    x = 378,008,168,766.01/698,228.88
  6. Step 6: Final answer
    x = 541,381.46

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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.