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Finding the Fourth Proportional to 698,361.18, 963,666.61 and 392,388.94

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Solution

The fourth proportional to 698,361.18, 963,666.61 and 392,388.94 is: 541,456.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,361.18 : 963,666.61 = 392,388.94 : x
  2. Step 2: Convert to fraction form
    698,361.18/963,666.61 = 392,388.94/x
  3. Step 3: Cross multiply
    698,361.18x = 963,666.61 × 392,388.94
  4. Step 4: Simplify right side
    698,361.18x = 378,132,119,611.29
  5. Step 5: Solve for x
    x = 378,132,119,611.29/698,361.18
  6. Step 6: Final answer
    x = 541,456.38

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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.