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Finding the Fourth Proportional to 614,800.20, 921,206.70 and 347,766.60

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Solution

The fourth proportional to 614,800.20, 921,206.70 and 347,766.60 is: 521,087.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,800.20 : 921,206.70 = 347,766.60 : x
  2. Step 2: Convert to fraction form
    614,800.20/921,206.70 = 347,766.60/x
  3. Step 3: Cross multiply
    614,800.20x = 921,206.70 × 347,766.60
  4. Step 4: Simplify right side
    614,800.20x = 320,364,921,956.22
  5. Step 5: Solve for x
    x = 320,364,921,956.22/614,800.20
  6. Step 6: Final answer
    x = 521,087.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.