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Finding the Fourth Proportional to 86,317.78, 119,129.89 and 48,599.38

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Solution

The fourth proportional to 86,317.78, 119,129.89 and 48,599.38 is: 67,073.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,317.78 : 119,129.89 = 48,599.38 : x
  2. Step 2: Convert to fraction form
    86,317.78/119,129.89 = 48,599.38/x
  3. Step 3: Cross multiply
    86,317.78x = 119,129.89 × 48,599.38
  4. Step 4: Simplify right side
    86,317.78x = 5,789,638,793.47
  5. Step 5: Solve for x
    x = 5,789,638,793.47/86,317.78
  6. Step 6: Final answer
    x = 67,073.54

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1.5x scale

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.