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Finding the Fourth Proportional to 178,695.40, 268,043.10 and 47,367.40

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Solution

The fourth proportional to 178,695.40, 268,043.10 and 47,367.40 is: 71,051.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,695.40 : 268,043.10 = 47,367.40 : x
  2. Step 2: Convert to fraction form
    178,695.40/268,043.10 = 47,367.40/x
  3. Step 3: Cross multiply
    178,695.40x = 268,043.10 × 47,367.40
  4. Step 4: Simplify right side
    178,695.40x = 12,696,504,734.94
  5. Step 5: Solve for x
    x = 12,696,504,734.94/178,695.40
  6. Step 6: Final answer
    x = 71,051.10

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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.