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Finding the Fourth Proportional to 58,442.84, 80,613.72 and 40,531.31

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Solution

The fourth proportional to 58,442.84, 80,613.72 and 40,531.31 is: 55,907.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,442.84 : 80,613.72 = 40,531.31 : x
  2. Step 2: Convert to fraction form
    58,442.84/80,613.72 = 40,531.31/x
  3. Step 3: Cross multiply
    58,442.84x = 80,613.72 × 40,531.31
  4. Step 4: Simplify right side
    58,442.84x = 3,267,379,272.50
  5. Step 5: Solve for x
    x = 3,267,379,272.50/58,442.84
  6. Step 6: Final answer
    x = 55,907.27

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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.