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Finding the Fourth Proportional to 356,511.26, 534,767.82 and 90,271.82

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Solution

The fourth proportional to 356,511.26, 534,767.82 and 90,271.82 is: 135,407.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,511.26 : 534,767.82 = 90,271.82 : x
  2. Step 2: Convert to fraction form
    356,511.26/534,767.82 = 90,271.82/x
  3. Step 3: Cross multiply
    356,511.26x = 534,767.82 × 90,271.82
  4. Step 4: Simplify right side
    356,511.26x = 48,274,464,388.83
  5. Step 5: Solve for x
    x = 48,274,464,388.83/356,511.26
  6. Step 6: Final answer
    x = 135,407.97

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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.