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Finding the Fourth Proportional to 544,589.40, 815,717.70 and 439,613.40

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Solution

The fourth proportional to 544,589.40, 815,717.70 and 439,613.40 is: 658,478.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,589.40 : 815,717.70 = 439,613.40 : x
  2. Step 2: Convert to fraction form
    544,589.40/815,717.70 = 439,613.40/x
  3. Step 3: Cross multiply
    544,589.40x = 815,717.70 × 439,613.40
  4. Step 4: Simplify right side
    544,589.40x = 358,600,431,537.18
  5. Step 5: Solve for x
    x = 358,600,431,537.18/544,589.40
  6. Step 6: Final answer
    x = 658,478.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.