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Finding the Fourth Proportional to 178,803.40, 268,205.10 and 54,144.40

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Solution

The fourth proportional to 178,803.40, 268,205.10 and 54,144.40 is: 81,216.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,803.40 : 268,205.10 = 54,144.40 : x
  2. Step 2: Convert to fraction form
    178,803.40/268,205.10 = 54,144.40/x
  3. Step 3: Cross multiply
    178,803.40x = 268,205.10 × 54,144.40
  4. Step 4: Simplify right side
    178,803.40x = 14,521,804,216.44
  5. Step 5: Solve for x
    x = 14,521,804,216.44/178,803.40
  6. Step 6: Final answer
    x = 81,216.60

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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.