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Finding the Fourth Proportional to 401,054.76, 553,455.56 and 222,206.76

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Solution

The fourth proportional to 401,054.76, 553,455.56 and 222,206.76 is: 306,645.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,054.76 : 553,455.56 = 222,206.76 : x
  2. Step 2: Convert to fraction form
    401,054.76/553,455.56 = 222,206.76/x
  3. Step 3: Cross multiply
    401,054.76x = 553,455.56 × 222,206.76
  4. Step 4: Simplify right side
    401,054.76x = 122,981,566,791.59
  5. Step 5: Solve for x
    x = 122,981,566,791.59/401,054.76
  6. Step 6: Final answer
    x = 306,645.32

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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.