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Finding the Fourth Proportional to 295,086.60, 442,046.70 and 161,728.20

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Solution

The fourth proportional to 295,086.60, 442,046.70 and 161,728.20 is: 242,272.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,086.60 : 442,046.70 = 161,728.20 : x
  2. Step 2: Convert to fraction form
    295,086.60/442,046.70 = 161,728.20/x
  3. Step 3: Cross multiply
    295,086.60x = 442,046.70 × 161,728.20
  4. Step 4: Simplify right side
    295,086.60x = 71,491,417,106.94
  5. Step 5: Solve for x
    x = 71,491,417,106.94/295,086.60
  6. Step 6: Final answer
    x = 242,272.67

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1.5x scale

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.