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Finding the Fourth Proportional to 86,750.64, 118,846.53 and 83,512.67

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Solution

The fourth proportional to 86,750.64, 118,846.53 and 83,512.67 is: 114,410.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,750.64 : 118,846.53 = 83,512.67 : x
  2. Step 2: Convert to fraction form
    86,750.64/118,846.53 = 83,512.67/x
  3. Step 3: Cross multiply
    86,750.64x = 118,846.53 × 83,512.67
  4. Step 4: Simplify right side
    86,750.64x = 9,925,190,446.30
  5. Step 5: Solve for x
    x = 9,925,190,446.30/86,750.64
  6. Step 6: Final answer
    x = 114,410.57

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.