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Finding the Fourth Proportional to 119,079.20, 178,532.40 and 48,922.40

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Solution

The fourth proportional to 119,079.20, 178,532.40 and 48,922.40 is: 73,348.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,079.20 : 178,532.40 = 48,922.40 : x
  2. Step 2: Convert to fraction form
    119,079.20/178,532.40 = 48,922.40/x
  3. Step 3: Cross multiply
    119,079.20x = 178,532.40 × 48,922.40
  4. Step 4: Simplify right side
    119,079.20x = 8,734,233,485.76
  5. Step 5: Solve for x
    x = 8,734,233,485.76/119,079.20
  6. Step 6: Final answer
    x = 73,348.10

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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.