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Finding the Fourth Proportional to 129,950.72, 179,330.58 and 73,364.48

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Solution

The fourth proportional to 129,950.72, 179,330.58 and 73,364.48 is: 101,242.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,950.72 : 179,330.58 = 73,364.48 : x
  2. Step 2: Convert to fraction form
    129,950.72/179,330.58 = 73,364.48/x
  3. Step 3: Cross multiply
    129,950.72x = 179,330.58 × 73,364.48
  4. Step 4: Simplify right side
    129,950.72x = 13,156,494,749.80
  5. Step 5: Solve for x
    x = 13,156,494,749.80/129,950.72
  6. Step 6: Final answer
    x = 101,242.18

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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.