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Finding the Fourth Proportional to 86,483.86, 119,343.16 and 48,247.40

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Solution

The fourth proportional to 86,483.86, 119,343.16 and 48,247.40 is: 66,578.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,483.86 : 119,343.16 = 48,247.40 : x
  2. Step 2: Convert to fraction form
    86,483.86/119,343.16 = 48,247.40/x
  3. Step 3: Cross multiply
    86,483.86x = 119,343.16 × 48,247.40
  4. Step 4: Simplify right side
    86,483.86x = 5,757,997,177.78
  5. Step 5: Solve for x
    x = 5,757,997,177.78/86,483.86
  6. Step 6: Final answer
    x = 66,578.86

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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.