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Finding the Fourth Proportional to 425,596.02, 638,493.39 and 145,113.54

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Solution

The fourth proportional to 425,596.02, 638,493.39 and 145,113.54 is: 217,704.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,596.02 : 638,493.39 = 145,113.54 : x
  2. Step 2: Convert to fraction form
    425,596.02/638,493.39 = 145,113.54/x
  3. Step 3: Cross multiply
    425,596.02x = 638,493.39 × 145,113.54
  4. Step 4: Simplify right side
    425,596.02x = 92,654,036,089.50
  5. Step 5: Solve for x
    x = 92,654,036,089.50/425,596.02
  6. Step 6: Final answer
    x = 217,704.19

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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.