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Finding the Fourth Proportional to 626,099.76, 863,058.99 and 383,933.28

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Solution

The fourth proportional to 626,099.76, 863,058.99 and 383,933.28 is: 529,240.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,099.76 : 863,058.99 = 383,933.28 : x
  2. Step 2: Convert to fraction form
    626,099.76/863,058.99 = 383,933.28/x
  3. Step 3: Cross multiply
    626,099.76x = 863,058.99 × 383,933.28
  4. Step 4: Simplify right side
    626,099.76x = 331,357,068,864.19
  5. Step 5: Solve for x
    x = 331,357,068,864.19/626,099.76
  6. Step 6: Final answer
    x = 529,240.05

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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.