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Finding the Fourth Proportional to 622,775.60, 859,493.82 and 381,217.80

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Solution

The fourth proportional to 622,775.60, 859,493.82 and 381,217.80 is: 526,119.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,775.60 : 859,493.82 = 381,217.80 : x
  2. Step 2: Convert to fraction form
    622,775.60/859,493.82 = 381,217.80/x
  3. Step 3: Cross multiply
    622,775.60x = 859,493.82 × 381,217.80
  4. Step 4: Simplify right side
    622,775.60x = 327,654,347,826.67
  5. Step 5: Solve for x
    x = 327,654,347,826.67/622,775.60
  6. Step 6: Final answer
    x = 526,119.44

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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.