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Finding the Fourth Proportional to 86,679.10, 130,018.65 and 24,349.60

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Solution

The fourth proportional to 86,679.10, 130,018.65 and 24,349.60 is: 36,524.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,679.10 : 130,018.65 = 24,349.60 : x
  2. Step 2: Convert to fraction form
    86,679.10/130,018.65 = 24,349.60/x
  3. Step 3: Cross multiply
    86,679.10x = 130,018.65 × 24,349.60
  4. Step 4: Simplify right side
    86,679.10x = 3,165,902,120.04
  5. Step 5: Solve for x
    x = 3,165,902,120.04/86,679.10
  6. Step 6: Final answer
    x = 36,524.40

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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.