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Finding the Fourth Proportional to 621,589.59, 857,869.53 and 349,668.96

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Solution

The fourth proportional to 621,589.59, 857,869.53 and 349,668.96 is: 482,585.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,589.59 : 857,869.53 = 349,668.96 : x
  2. Step 2: Convert to fraction form
    621,589.59/857,869.53 = 349,668.96/x
  3. Step 3: Cross multiply
    621,589.59x = 857,869.53 × 349,668.96
  4. Step 4: Simplify right side
    621,589.59x = 299,970,346,370.79
  5. Step 5: Solve for x
    x = 299,970,346,370.79/621,589.59
  6. Step 6: Final answer
    x = 482,585.86

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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.