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Finding the Fourth Proportional to 404,327.65, 558,710.22 and 346,173.61

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Solution

The fourth proportional to 404,327.65, 558,710.22 and 346,173.61 is: 478,351.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,327.65 : 558,710.22 = 346,173.61 : x
  2. Step 2: Convert to fraction form
    404,327.65/558,710.22 = 346,173.61/x
  3. Step 3: Cross multiply
    404,327.65x = 558,710.22 × 346,173.61
  4. Step 4: Simplify right side
    404,327.65x = 193,410,733,465.43
  5. Step 5: Solve for x
    x = 193,410,733,465.43/404,327.65
  6. Step 6: Final answer
    x = 478,351.49

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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.