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Finding the Fourth Proportional to 624,214.58, 935,928.21 and 343,928.66

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Solution

The fourth proportional to 624,214.58, 935,928.21 and 343,928.66 is: 515,676.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,214.58 : 935,928.21 = 343,928.66 : x
  2. Step 2: Convert to fraction form
    624,214.58/935,928.21 = 343,928.66/x
  3. Step 3: Cross multiply
    624,214.58x = 935,928.21 × 343,928.66
  4. Step 4: Simplify right side
    624,214.58x = 321,892,535,121.50
  5. Step 5: Solve for x
    x = 321,892,535,121.50/624,214.58
  6. Step 6: Final answer
    x = 515,676.09

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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.