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Finding the Fourth Proportional to 18,358.50, 27,538.02 and 4,507.50

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Solution

The fourth proportional to 18,358.50, 27,538.02 and 4,507.50 is: 6,761.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,358.50 : 27,538.02 = 4,507.50 : x
  2. Step 2: Convert to fraction form
    18,358.50/27,538.02 = 4,507.50/x
  3. Step 3: Cross multiply
    18,358.50x = 27,538.02 × 4,507.50
  4. Step 4: Simplify right side
    18,358.50x = 124,127,625.15
  5. Step 5: Solve for x
    x = 124,127,625.15/18,358.50
  6. Step 6: Final answer
    x = 6,761.32

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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.