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Finding the Fourth Proportional to 275,597.12, 380,225.76 and 173,631.80

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Solution

The fourth proportional to 275,597.12, 380,225.76 and 173,631.80 is: 239,549.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,597.12 : 380,225.76 = 173,631.80 : x
  2. Step 2: Convert to fraction form
    275,597.12/380,225.76 = 173,631.80/x
  3. Step 3: Cross multiply
    275,597.12x = 380,225.76 × 173,631.80
  4. Step 4: Simplify right side
    275,597.12x = 66,019,283,115.17
  5. Step 5: Solve for x
    x = 66,019,283,115.17/275,597.12
  6. Step 6: Final answer
    x = 239,549.97

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1.5x scale

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.