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Finding the Fourth Proportional to 76,484.55, 114,629.48 and 43,223.17

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Solution

The fourth proportional to 76,484.55, 114,629.48 and 43,223.17 is: 64,779.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,484.55 : 114,629.48 = 43,223.17 : x
  2. Step 2: Convert to fraction form
    76,484.55/114,629.48 = 43,223.17/x
  3. Step 3: Cross multiply
    76,484.55x = 114,629.48 × 43,223.17
  4. Step 4: Simplify right side
    76,484.55x = 4,954,649,375.38
  5. Step 5: Solve for x
    x = 4,954,649,375.38/76,484.55
  6. Step 6: Final answer
    x = 64,779.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.