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Finding the Fourth Proportional to 557,091.81, 768,786.39 and 302,443.20

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Solution

The fourth proportional to 557,091.81, 768,786.39 and 302,443.20 is: 417,371.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,091.81 : 768,786.39 = 302,443.20 : x
  2. Step 2: Convert to fraction form
    557,091.81/768,786.39 = 302,443.20/x
  3. Step 3: Cross multiply
    557,091.81x = 768,786.39 × 302,443.20
  4. Step 4: Simplify right side
    557,091.81x = 232,514,215,908.05
  5. Step 5: Solve for x
    x = 232,514,215,908.05/557,091.81
  6. Step 6: Final answer
    x = 417,371.45

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.