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Finding the Fourth Proportional to 633,221.55, 873,833.84 and 346,736.43

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Solution

The fourth proportional to 633,221.55, 873,833.84 and 346,736.43 is: 478,489.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,221.55 : 873,833.84 = 346,736.43 : x
  2. Step 2: Convert to fraction form
    633,221.55/873,833.84 = 346,736.43/x
  3. Step 3: Cross multiply
    633,221.55x = 873,833.84 × 346,736.43
  4. Step 4: Simplify right side
    633,221.55x = 302,990,024,361.11
  5. Step 5: Solve for x
    x = 302,990,024,361.11/633,221.55
  6. Step 6: Final answer
    x = 478,489.76

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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.