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Finding the Fourth Proportional to 419,561.17, 579,064.61 and 247,521.83

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Solution

The fourth proportional to 419,561.17, 579,064.61 and 247,521.83 is: 341,621.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,561.17 : 579,064.61 = 247,521.83 : x
  2. Step 2: Convert to fraction form
    419,561.17/579,064.61 = 247,521.83/x
  3. Step 3: Cross multiply
    419,561.17x = 579,064.61 × 247,521.83
  4. Step 4: Simplify right side
    419,561.17x = 143,331,129,678.92
  5. Step 5: Solve for x
    x = 143,331,129,678.92/419,561.17
  6. Step 6: Final answer
    x = 341,621.53

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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.