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Finding the Fourth Proportional to 392,999.84, 589,006.20 and 168,095.60

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Solution

The fourth proportional to 392,999.84, 589,006.20 and 168,095.60 is: 251,932.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,999.84 : 589,006.20 = 168,095.60 : x
  2. Step 2: Convert to fraction form
    392,999.84/589,006.20 = 168,095.60/x
  3. Step 3: Cross multiply
    392,999.84x = 589,006.20 × 168,095.60
  4. Step 4: Simplify right side
    392,999.84x = 99,009,350,592.72
  5. Step 5: Solve for x
    x = 99,009,350,592.72/392,999.84
  6. Step 6: Final answer
    x = 251,932.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.