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Finding the Fourth Proportional to 213,732.09, 320,686.44 and 93,726.94

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Solution

The fourth proportional to 213,732.09, 320,686.44 and 93,726.94 is: 140,629.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,732.09 : 320,686.44 = 93,726.94 : x
  2. Step 2: Convert to fraction form
    213,732.09/320,686.44 = 93,726.94/x
  3. Step 3: Cross multiply
    213,732.09x = 320,686.44 × 93,726.94
  4. Step 4: Simplify right side
    213,732.09x = 30,056,958,252.06
  5. Step 5: Solve for x
    x = 30,056,958,252.06/213,732.09
  6. Step 6: Final answer
    x = 140,629.14

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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.