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Finding the Fourth Proportional to 18,607.50, 27,903.96 and 7,512.12

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Solution

The fourth proportional to 18,607.50, 27,903.96 and 7,512.12 is: 11,265.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,607.50 : 27,903.96 = 7,512.12 : x
  2. Step 2: Convert to fraction form
    18,607.50/27,903.96 = 7,512.12/x
  3. Step 3: Cross multiply
    18,607.50x = 27,903.96 × 7,512.12
  4. Step 4: Simplify right side
    18,607.50x = 209,617,896.00
  5. Step 5: Solve for x
    x = 209,617,896.00/18,607.50
  6. Step 6: Final answer
    x = 11,265.24

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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.