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Finding the Fourth Proportional to 633,057.12, 948,929.52 and 395,855.28

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Solution

The fourth proportional to 633,057.12, 948,929.52 and 395,855.28 is: 593,372.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,057.12 : 948,929.52 = 395,855.28 : x
  2. Step 2: Convert to fraction form
    633,057.12/948,929.52 = 395,855.28/x
  3. Step 3: Cross multiply
    633,057.12x = 948,929.52 × 395,855.28
  4. Step 4: Simplify right side
    633,057.12x = 375,638,760,839.87
  5. Step 5: Solve for x
    x = 375,638,760,839.87/633,057.12
  6. Step 6: Final answer
    x = 593,372.62

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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.