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Finding the Fourth Proportional to 9,368.80, 14,048.88 and 2,793.28

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Solution

The fourth proportional to 9,368.80, 14,048.88 and 2,793.28 is: 4,188.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,368.80 : 14,048.88 = 2,793.28 : x
  2. Step 2: Convert to fraction form
    9,368.80/14,048.88 = 2,793.28/x
  3. Step 3: Cross multiply
    9,368.80x = 14,048.88 × 2,793.28
  4. Step 4: Simplify right side
    9,368.80x = 39,242,455.53
  5. Step 5: Solve for x
    x = 39,242,455.53/9,368.80
  6. Step 6: Final answer
    x = 4,188.63

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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.