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Finding the Fourth Proportional to 18,509.76, 27,720.15 and 10,588.26

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Solution

The fourth proportional to 18,509.76, 27,720.15 and 10,588.26 is: 15,856.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,509.76 : 27,720.15 = 10,588.26 : x
  2. Step 2: Convert to fraction form
    18,509.76/27,720.15 = 10,588.26/x
  3. Step 3: Cross multiply
    18,509.76x = 27,720.15 × 10,588.26
  4. Step 4: Simplify right side
    18,509.76x = 293,508,155.44
  5. Step 5: Solve for x
    x = 293,508,155.44/18,509.76
  6. Step 6: Final answer
    x = 15,856.94

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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.