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Finding the Fourth Proportional to 392,503.40, 588,577.98 and 111,953.96

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Solution

The fourth proportional to 392,503.40, 588,577.98 and 111,953.96 is: 167,880.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,503.40 : 588,577.98 = 111,953.96 : x
  2. Step 2: Convert to fraction form
    392,503.40/588,577.98 = 111,953.96/x
  3. Step 3: Cross multiply
    392,503.40x = 588,577.98 × 111,953.96
  4. Step 4: Simplify right side
    392,503.40x = 65,893,635,629.80
  5. Step 5: Solve for x
    x = 65,893,635,629.80/392,503.40
  6. Step 6: Final answer
    x = 167,880.42

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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.