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Finding the Fourth Proportional to 492,520.84, 738,781.40 and 118,543.84

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Solution

The fourth proportional to 492,520.84, 738,781.40 and 118,543.84 is: 177,815.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,520.84 : 738,781.40 = 118,543.84 : x
  2. Step 2: Convert to fraction form
    492,520.84/738,781.40 = 118,543.84/x
  3. Step 3: Cross multiply
    492,520.84x = 738,781.40 × 118,543.84
  4. Step 4: Simplify right side
    492,520.84x = 87,577,984,076.58
  5. Step 5: Solve for x
    x = 87,577,984,076.58/492,520.84
  6. Step 6: Final answer
    x = 177,815.79

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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.