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Finding the Fourth Proportional to 18,353.66, 27,520.78 and 7,259.90

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Solution

The fourth proportional to 18,353.66, 27,520.78 and 7,259.90 is: 10,886.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,353.66 : 27,520.78 = 7,259.90 : x
  2. Step 2: Convert to fraction form
    18,353.66/27,520.78 = 7,259.90/x
  3. Step 3: Cross multiply
    18,353.66x = 27,520.78 × 7,259.90
  4. Step 4: Simplify right side
    18,353.66x = 199,798,110.72
  5. Step 5: Solve for x
    x = 199,798,110.72/18,353.66
  6. Step 6: Final answer
    x = 10,886.01

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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.