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Finding the Fourth Proportional to 625,898.30, 863,676.15 and 384,191.06

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Solution

The fourth proportional to 625,898.30, 863,676.15 and 384,191.06 is: 530,144.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,898.30 : 863,676.15 = 384,191.06 : x
  2. Step 2: Convert to fraction form
    625,898.30/863,676.15 = 384,191.06/x
  3. Step 3: Cross multiply
    625,898.30x = 863,676.15 × 384,191.06
  4. Step 4: Simplify right side
    625,898.30x = 331,816,655,565.22
  5. Step 5: Solve for x
    x = 331,816,655,565.22/625,898.30
  6. Step 6: Final answer
    x = 530,144.68

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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.