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Finding the Fourth Proportional to 86,034.72, 118,733.84 and 48,311.84

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Solution

The fourth proportional to 86,034.72, 118,733.84 and 48,311.84 is: 66,673.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,034.72 : 118,733.84 = 48,311.84 : x
  2. Step 2: Convert to fraction form
    86,034.72/118,733.84 = 48,311.84/x
  3. Step 3: Cross multiply
    86,034.72x = 118,733.84 × 48,311.84
  4. Step 4: Simplify right side
    86,034.72x = 5,736,250,280.67
  5. Step 5: Solve for x
    x = 5,736,250,280.67/86,034.72
  6. Step 6: Final answer
    x = 66,673.67

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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.