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Finding the Fourth Proportional to 621,625.56, 857,842.04 and 349,693.68

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Solution

The fourth proportional to 621,625.56, 857,842.04 and 349,693.68 is: 482,576.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,625.56 : 857,842.04 = 349,693.68 : x
  2. Step 2: Convert to fraction form
    621,625.56/857,842.04 = 349,693.68/x
  3. Step 3: Cross multiply
    621,625.56x = 857,842.04 × 349,693.68
  4. Step 4: Simplify right side
    621,625.56x = 299,981,939,826.31
  5. Step 5: Solve for x
    x = 299,981,939,826.31/621,625.56
  6. Step 6: Final answer
    x = 482,576.58

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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.