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Finding the Fourth Proportional to 40,674.42, 61,020.90 and 15,714.54

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Solution

The fourth proportional to 40,674.42, 61,020.90 and 15,714.54 is: 23,575.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,674.42 : 61,020.90 = 15,714.54 : x
  2. Step 2: Convert to fraction form
    40,674.42/61,020.90 = 15,714.54/x
  3. Step 3: Cross multiply
    40,674.42x = 61,020.90 × 15,714.54
  4. Step 4: Simplify right side
    40,674.42x = 958,915,373.89
  5. Step 5: Solve for x
    x = 958,915,373.89/40,674.42
  6. Step 6: Final answer
    x = 23,575.39

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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.