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Finding the Fourth Proportional to 619,860.23, 855,378.32 and 344,235.58

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Solution

The fourth proportional to 619,860.23, 855,378.32 and 344,235.58 is: 475,029.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,860.23 : 855,378.32 = 344,235.58 : x
  2. Step 2: Convert to fraction form
    619,860.23/855,378.32 = 344,235.58/x
  3. Step 3: Cross multiply
    619,860.23x = 855,378.32 × 344,235.58
  4. Step 4: Simplify right side
    619,860.23x = 294,451,650,826.77
  5. Step 5: Solve for x
    x = 294,451,650,826.77/619,860.23
  6. Step 6: Final answer
    x = 475,029.11

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1.5x scale

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.