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Finding the Fourth Proportional to 492,472.21, 738,708.22 and 118,495.21

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Solution

The fourth proportional to 492,472.21, 738,708.22 and 118,495.21 is: 177,742.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,472.21 : 738,708.22 = 118,495.21 : x
  2. Step 2: Convert to fraction form
    492,472.21/738,708.22 = 118,495.21/x
  3. Step 3: Cross multiply
    492,472.21x = 738,708.22 × 118,495.21
  4. Step 4: Simplify right side
    492,472.21x = 87,533,385,657.63
  5. Step 5: Solve for x
    x = 87,533,385,657.63/492,472.21
  6. Step 6: Final answer
    x = 177,742.79

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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.