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Finding the Fourth Proportional to 401,716.80, 554,350.60 and 220,424.22

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Solution

The fourth proportional to 401,716.80, 554,350.60 and 220,424.22 is: 304,175.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,716.80 : 554,350.60 = 220,424.22 : x
  2. Step 2: Convert to fraction form
    401,716.80/554,350.60 = 220,424.22/x
  3. Step 3: Cross multiply
    401,716.80x = 554,350.60 × 220,424.22
  4. Step 4: Simplify right side
    401,716.80x = 122,192,298,887.06
  5. Step 5: Solve for x
    x = 122,192,298,887.06/401,716.80
  6. Step 6: Final answer
    x = 304,175.23

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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.