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Finding the Fourth Proportional to 235,760.80, 353,641.20 and 161,111.20

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Solution

The fourth proportional to 235,760.80, 353,641.20 and 161,111.20 is: 241,666.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,760.80 : 353,641.20 = 161,111.20 : x
  2. Step 2: Convert to fraction form
    235,760.80/353,641.20 = 161,111.20/x
  3. Step 3: Cross multiply
    235,760.80x = 353,641.20 × 161,111.20
  4. Step 4: Simplify right side
    235,760.80x = 56,975,558,101.44
  5. Step 5: Solve for x
    x = 56,975,558,101.44/235,760.80
  6. Step 6: Final answer
    x = 241,666.80

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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.