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Finding the Fourth Proportional to 572,357.97, 789,856.92 and 357,622.47

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Solution

The fourth proportional to 572,357.97, 789,856.92 and 357,622.47 is: 493,520.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,357.97 : 789,856.92 = 357,622.47 : x
  2. Step 2: Convert to fraction form
    572,357.97/789,856.92 = 357,622.47/x
  3. Step 3: Cross multiply
    572,357.97x = 789,856.92 × 357,622.47
  4. Step 4: Simplify right side
    572,357.97x = 282,470,582,676.99
  5. Step 5: Solve for x
    x = 282,470,582,676.99/572,357.97
  6. Step 6: Final answer
    x = 493,520.83

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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.