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Finding the Fourth Proportional to 87,072.60, 130,608.90 and 40,416.60

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Solution

The fourth proportional to 87,072.60, 130,608.90 and 40,416.60 is: 60,624.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,072.60 : 130,608.90 = 40,416.60 : x
  2. Step 2: Convert to fraction form
    87,072.60/130,608.90 = 40,416.60/x
  3. Step 3: Cross multiply
    87,072.60x = 130,608.90 × 40,416.60
  4. Step 4: Simplify right side
    87,072.60x = 5,278,767,667.74
  5. Step 5: Solve for x
    x = 5,278,767,667.74/87,072.60
  6. Step 6: Final answer
    x = 60,624.90

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.