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Finding the Fourth Proportional to 481,210.70, 721,880.85 and 165,764.30

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Solution

The fourth proportional to 481,210.70, 721,880.85 and 165,764.30 is: 248,668.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,210.70 : 721,880.85 = 165,764.30 : x
  2. Step 2: Convert to fraction form
    481,210.70/721,880.85 = 165,764.30/x
  3. Step 3: Cross multiply
    481,210.70x = 721,880.85 × 165,764.30
  4. Step 4: Simplify right side
    481,210.70x = 119,662,073,783.66
  5. Step 5: Solve for x
    x = 119,662,073,783.66/481,210.70
  6. Step 6: Final answer
    x = 248,668.77

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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.