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Finding the Fourth Proportional to 620,410.66, 856,148.03 and 344,767.59

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Solution

The fourth proportional to 620,410.66, 856,148.03 and 344,767.59 is: 475,768.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,410.66 : 856,148.03 = 344,767.59 : x
  2. Step 2: Convert to fraction form
    620,410.66/856,148.03 = 344,767.59/x
  3. Step 3: Cross multiply
    620,410.66x = 856,148.03 × 344,767.59
  4. Step 4: Simplify right side
    620,410.66x = 295,172,086,981.77
  5. Step 5: Solve for x
    x = 295,172,086,981.77/620,410.66
  6. Step 6: Final answer
    x = 475,768.89

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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.