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Finding the Fourth Proportional to 492,689.54, 739,034.94 and 118,712.54

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Solution

The fourth proportional to 492,689.54, 739,034.94 and 118,712.54 is: 178,068.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,689.54 : 739,034.94 = 118,712.54 : x
  2. Step 2: Convert to fraction form
    492,689.54/739,034.94 = 118,712.54/x
  3. Step 3: Cross multiply
    492,689.54x = 739,034.94 × 118,712.54
  4. Step 4: Simplify right side
    492,689.54x = 87,732,714,876.15
  5. Step 5: Solve for x
    x = 87,732,714,876.15/492,689.54
  6. Step 6: Final answer
    x = 178,068.96

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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.