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Finding the Fourth Proportional to 573,985.44, 792,099.90 and 319,336.56

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Solution

The fourth proportional to 573,985.44, 792,099.90 and 319,336.56 is: 440,684.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,985.44 : 792,099.90 = 319,336.56 : x
  2. Step 2: Convert to fraction form
    573,985.44/792,099.90 = 319,336.56/x
  3. Step 3: Cross multiply
    573,985.44x = 792,099.90 × 319,336.56
  4. Step 4: Simplify right side
    573,985.44x = 252,946,457,242.34
  5. Step 5: Solve for x
    x = 252,946,457,242.34/573,985.44
  6. Step 6: Final answer
    x = 440,684.45

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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.