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Finding the Fourth Proportional to 479,576.13, 661,863.61 and 411,817.40

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Solution

The fourth proportional to 479,576.13, 661,863.61 and 411,817.40 is: 568,349.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,576.13 : 661,863.61 = 411,817.40 : x
  2. Step 2: Convert to fraction form
    479,576.13/661,863.61 = 411,817.40/x
  3. Step 3: Cross multiply
    479,576.13x = 661,863.61 × 411,817.40
  4. Step 4: Simplify right side
    479,576.13x = 272,566,948,395.78
  5. Step 5: Solve for x
    x = 272,566,948,395.78/479,576.13
  6. Step 6: Final answer
    x = 568,349.70

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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.