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Finding the Fourth Proportional to 180,638.02, 271,125.15 and 91,957.91

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Solution

The fourth proportional to 180,638.02, 271,125.15 and 91,957.91 is: 138,022.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,638.02 : 271,125.15 = 91,957.91 : x
  2. Step 2: Convert to fraction form
    180,638.02/271,125.15 = 91,957.91/x
  3. Step 3: Cross multiply
    180,638.02x = 271,125.15 × 91,957.91
  4. Step 4: Simplify right side
    180,638.02x = 24,932,101,682.65
  5. Step 5: Solve for x
    x = 24,932,101,682.65/180,638.02
  6. Step 6: Final answer
    x = 138,022.45

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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.