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Finding the Fourth Proportional to 463,996.80, 695,995.20 and 261,043.20

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Solution

The fourth proportional to 463,996.80, 695,995.20 and 261,043.20 is: 391,564.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,996.80 : 695,995.20 = 261,043.20 : x
  2. Step 2: Convert to fraction form
    463,996.80/695,995.20 = 261,043.20/x
  3. Step 3: Cross multiply
    463,996.80x = 695,995.20 × 261,043.20
  4. Step 4: Simplify right side
    463,996.80x = 181,684,814,192.64
  5. Step 5: Solve for x
    x = 181,684,814,192.64/463,996.80
  6. Step 6: Final answer
    x = 391,564.80

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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.