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Finding the Fourth Proportional to 558,178.75, 770,505.77 and 395,684.57

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Solution

The fourth proportional to 558,178.75, 770,505.77 and 395,684.57 is: 546,200.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,178.75 : 770,505.77 = 395,684.57 : x
  2. Step 2: Convert to fraction form
    558,178.75/770,505.77 = 395,684.57/x
  3. Step 3: Cross multiply
    558,178.75x = 770,505.77 × 395,684.57
  4. Step 4: Simplify right side
    558,178.75x = 304,877,242,807.67
  5. Step 5: Solve for x
    x = 304,877,242,807.67/558,178.75
  6. Step 6: Final answer
    x = 546,200.02

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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.