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Finding the Fourth Proportional to 401,090.56, 601,635.84 and 190,613.68

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Solution

The fourth proportional to 401,090.56, 601,635.84 and 190,613.68 is: 285,920.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,090.56 : 601,635.84 = 190,613.68 : x
  2. Step 2: Convert to fraction form
    401,090.56/601,635.84 = 190,613.68/x
  3. Step 3: Cross multiply
    401,090.56x = 601,635.84 × 190,613.68
  4. Step 4: Simplify right side
    401,090.56x = 114,680,021,482.29
  5. Step 5: Solve for x
    x = 114,680,021,482.29/401,090.56
  6. Step 6: Final answer
    x = 285,920.52

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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.