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Finding the Fourth Proportional to 558,369.74, 770,687.10 and 316,793.72

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Solution

The fourth proportional to 558,369.74, 770,687.10 and 316,793.72 is: 437,252.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,369.74 : 770,687.10 = 316,793.72 : x
  2. Step 2: Convert to fraction form
    558,369.74/770,687.10 = 316,793.72/x
  3. Step 3: Cross multiply
    558,369.74x = 770,687.10 × 316,793.72
  4. Step 4: Simplify right side
    558,369.74x = 244,148,833,365.01
  5. Step 5: Solve for x
    x = 244,148,833,365.01/558,369.74
  6. Step 6: Final answer
    x = 437,252.98

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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.