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Finding the Fourth Proportional to 475,855.10, 656,335.94 and 404,121.50

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Solution

The fourth proportional to 475,855.10, 656,335.94 and 404,121.50 is: 557,395.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,855.10 : 656,335.94 = 404,121.50 : x
  2. Step 2: Convert to fraction form
    475,855.10/656,335.94 = 404,121.50/x
  3. Step 3: Cross multiply
    475,855.10x = 656,335.94 × 404,121.50
  4. Step 4: Simplify right side
    475,855.10x = 265,239,464,576.71
  5. Step 5: Solve for x
    x = 265,239,464,576.71/475,855.10
  6. Step 6: Final answer
    x = 557,395.44

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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.