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Finding the Fourth Proportional to 13,368.80, 20,060.40 and 5,974.40

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Solution

The fourth proportional to 13,368.80, 20,060.40 and 5,974.40 is: 8,964.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,368.80 : 20,060.40 = 5,974.40 : x
  2. Step 2: Convert to fraction form
    13,368.80/20,060.40 = 5,974.40/x
  3. Step 3: Cross multiply
    13,368.80x = 20,060.40 × 5,974.40
  4. Step 4: Simplify right side
    13,368.80x = 119,848,853.76
  5. Step 5: Solve for x
    x = 119,848,853.76/13,368.80
  6. Step 6: Final answer
    x = 8,964.82

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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.