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Finding the Fourth Proportional to 397,702.08, 548,619.66 and 236,442.42

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Solution

The fourth proportional to 397,702.08, 548,619.66 and 236,442.42 is: 326,166.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,702.08 : 548,619.66 = 236,442.42 : x
  2. Step 2: Convert to fraction form
    397,702.08/548,619.66 = 236,442.42/x
  3. Step 3: Cross multiply
    397,702.08x = 548,619.66 × 236,442.42
  4. Step 4: Simplify right side
    397,702.08x = 129,716,960,069.98
  5. Step 5: Solve for x
    x = 129,716,960,069.98/397,702.08
  6. Step 6: Final answer
    x = 326,166.16

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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.