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Finding the Fourth Proportional to 531,128.80, 796,693.20 and 334,520.80

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Solution

The fourth proportional to 531,128.80, 796,693.20 and 334,520.80 is: 501,781.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,128.80 : 796,693.20 = 334,520.80 : x
  2. Step 2: Convert to fraction form
    531,128.80/796,693.20 = 334,520.80/x
  3. Step 3: Cross multiply
    531,128.80x = 796,693.20 × 334,520.80
  4. Step 4: Simplify right side
    531,128.80x = 266,510,446,618.56
  5. Step 5: Solve for x
    x = 266,510,446,618.56/531,128.80
  6. Step 6: Final answer
    x = 501,781.20

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Double scale
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Similar ratio
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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.