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Finding the Fourth Proportional to 9,804.60, 14,713.20 and 5,425.20

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Solution

The fourth proportional to 9,804.60, 14,713.20 and 5,425.20 is: 8,141.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,804.60 : 14,713.20 = 5,425.20 : x
  2. Step 2: Convert to fraction form
    9,804.60/14,713.20 = 5,425.20/x
  3. Step 3: Cross multiply
    9,804.60x = 14,713.20 × 5,425.20
  4. Step 4: Simplify right side
    9,804.60x = 79,822,052.64
  5. Step 5: Solve for x
    x = 79,822,052.64/9,804.60
  6. Step 6: Final answer
    x = 8,141.29

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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.