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Finding the Fourth Proportional to 625,717.20, 863,424.90 and 384,009.96

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Solution

The fourth proportional to 625,717.20, 863,424.90 and 384,009.96 is: 529,893.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,717.20 : 863,424.90 = 384,009.96 : x
  2. Step 2: Convert to fraction form
    625,717.20/863,424.90 = 384,009.96/x
  3. Step 3: Cross multiply
    625,717.20x = 863,424.90 × 384,009.96
  4. Step 4: Simplify right side
    625,717.20x = 331,563,761,312.00
  5. Step 5: Solve for x
    x = 331,563,761,312.00/625,717.20
  6. Step 6: Final answer
    x = 529,893.95

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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.