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Finding the Fourth Proportional to 617,887.17, 928,383.53 and 393,347.88

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Solution

The fourth proportional to 617,887.17, 928,383.53 and 393,347.88 is: 591,010.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,887.17 : 928,383.53 = 393,347.88 : x
  2. Step 2: Convert to fraction form
    617,887.17/928,383.53 = 393,347.88/x
  3. Step 3: Cross multiply
    617,887.17x = 928,383.53 × 393,347.88
  4. Step 4: Simplify right side
    617,887.17x = 365,177,691,385.68
  5. Step 5: Solve for x
    x = 365,177,691,385.68/617,887.17
  6. Step 6: Final answer
    x = 591,010.32

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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.