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Finding the Fourth Proportional to 492,072.80, 738,109.20 and 176,561.60

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Solution

The fourth proportional to 492,072.80, 738,109.20 and 176,561.60 is: 264,842.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,072.80 : 738,109.20 = 176,561.60 : x
  2. Step 2: Convert to fraction form
    492,072.80/738,109.20 = 176,561.60/x
  3. Step 3: Cross multiply
    492,072.80x = 738,109.20 × 176,561.60
  4. Step 4: Simplify right side
    492,072.80x = 130,321,741,326.72
  5. Step 5: Solve for x
    x = 130,321,741,326.72/492,072.80
  6. Step 6: Final answer
    x = 264,842.40

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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.