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Finding the Fourth Proportional to 248,736.80, 343,215.96 and 153,237.80

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Solution

The fourth proportional to 248,736.80, 343,215.96 and 153,237.80 is: 211,443.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,736.80 : 343,215.96 = 153,237.80 : x
  2. Step 2: Convert to fraction form
    248,736.80/343,215.96 = 153,237.80/x
  3. Step 3: Cross multiply
    248,736.80x = 343,215.96 × 153,237.80
  4. Step 4: Simplify right side
    248,736.80x = 52,593,658,635.29
  5. Step 5: Solve for x
    x = 52,593,658,635.29/248,736.80
  6. Step 6: Final answer
    x = 211,443.01

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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.