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Finding the Fourth Proportional to 578,617.20, 798,082.20 and 497,905.56

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Solution

The fourth proportional to 578,617.20, 798,082.20 and 497,905.56 is: 686,757.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,617.20 : 798,082.20 = 497,905.56 : x
  2. Step 2: Convert to fraction form
    578,617.20/798,082.20 = 497,905.56/x
  3. Step 3: Cross multiply
    578,617.20x = 798,082.20 × 497,905.56
  4. Step 4: Simplify right side
    578,617.20x = 397,369,564,717.03
  5. Step 5: Solve for x
    x = 397,369,564,717.03/578,617.20
  6. Step 6: Final answer
    x = 686,757.26

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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.