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Finding the Fourth Proportional to 7,359.40, 11,039.22 and 2,165.40

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Solution

The fourth proportional to 7,359.40, 11,039.22 and 2,165.40 is: 3,248.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,359.40 : 11,039.22 = 2,165.40 : x
  2. Step 2: Convert to fraction form
    7,359.40/11,039.22 = 2,165.40/x
  3. Step 3: Cross multiply
    7,359.40x = 11,039.22 × 2,165.40
  4. Step 4: Simplify right side
    7,359.40x = 23,904,326.99
  5. Step 5: Solve for x
    x = 23,904,326.99/7,359.40
  6. Step 6: Final answer
    x = 3,248.14

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1.5x scale

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.