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Finding the Fourth Proportional to 395,047.89, 545,173.11 and 223,000.25

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Solution

The fourth proportional to 395,047.89, 545,173.11 and 223,000.25 is: 307,744.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,047.89 : 545,173.11 = 223,000.25 : x
  2. Step 2: Convert to fraction form
    395,047.89/545,173.11 = 223,000.25/x
  3. Step 3: Cross multiply
    395,047.89x = 545,173.11 × 223,000.25
  4. Step 4: Simplify right side
    395,047.89x = 121,573,737,097.41
  5. Step 5: Solve for x
    x = 121,573,737,097.41/395,047.89
  6. Step 6: Final answer
    x = 307,744.30

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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.