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Finding the Fourth Proportional to 329,866.48, 455,215.80 and 186,623.56

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Solution

The fourth proportional to 329,866.48, 455,215.80 and 186,623.56 is: 257,540.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,866.48 : 455,215.80 = 186,623.56 : x
  2. Step 2: Convert to fraction form
    329,866.48/455,215.80 = 186,623.56/x
  3. Step 3: Cross multiply
    329,866.48x = 455,215.80 × 186,623.56
  4. Step 4: Simplify right side
    329,866.48x = 84,953,993,164.25
  5. Step 5: Solve for x
    x = 84,953,993,164.25/329,866.48
  6. Step 6: Final answer
    x = 257,540.55

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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.