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Finding the Fourth Proportional to 5,289.32, 7,935.60 and 3,338.84

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Solution

The fourth proportional to 5,289.32, 7,935.60 and 3,338.84 is: 5,009.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,289.32 : 7,935.60 = 3,338.84 : x
  2. Step 2: Convert to fraction form
    5,289.32/7,935.60 = 3,338.84/x
  3. Step 3: Cross multiply
    5,289.32x = 7,935.60 × 3,338.84
  4. Step 4: Simplify right side
    5,289.32x = 26,495,698.70
  5. Step 5: Solve for x
    x = 26,495,698.70/5,289.32
  6. Step 6: Final answer
    x = 5,009.28

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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.