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Finding the Fourth Proportional to 86,085.70, 118,794.81 and 48,359.14

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Solution

The fourth proportional to 86,085.70, 118,794.81 and 48,359.14 is: 66,733.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,085.70 : 118,794.81 = 48,359.14 : x
  2. Step 2: Convert to fraction form
    86,085.70/118,794.81 = 48,359.14/x
  3. Step 3: Cross multiply
    86,085.70x = 118,794.81 × 48,359.14
  4. Step 4: Simplify right side
    86,085.70x = 5,744,814,848.06
  5. Step 5: Solve for x
    x = 5,744,814,848.06/86,085.70
  6. Step 6: Final answer
    x = 66,733.67

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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.