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Finding the Fourth Proportional to 558,367.74, 770,684.34 and 316,791.72

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Solution

The fourth proportional to 558,367.74, 770,684.34 and 316,791.72 is: 437,250.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,367.74 : 770,684.34 = 316,791.72 : x
  2. Step 2: Convert to fraction form
    558,367.74/770,684.34 = 316,791.72/x
  3. Step 3: Cross multiply
    558,367.74x = 770,684.34 × 316,791.72
  4. Step 4: Simplify right side
    558,367.74x = 244,146,417,645.67
  5. Step 5: Solve for x
    x = 244,146,417,645.67/558,367.74
  6. Step 6: Final answer
    x = 437,250.22

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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.