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Finding the Fourth Proportional to 86,857.60, 119,856.96 and 58,601.60

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Solution

The fourth proportional to 86,857.60, 119,856.96 and 58,601.60 is: 80,865.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,857.60 : 119,856.96 = 58,601.60 : x
  2. Step 2: Convert to fraction form
    86,857.60/119,856.96 = 58,601.60/x
  3. Step 3: Cross multiply
    86,857.60x = 119,856.96 × 58,601.60
  4. Step 4: Simplify right side
    86,857.60x = 7,023,809,627.14
  5. Step 5: Solve for x
    x = 7,023,809,627.14/86,857.60
  6. Step 6: Final answer
    x = 80,865.80

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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.