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Finding the Fourth Proportional to 36,114.40, 54,128.40 and 18,575.20

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Solution

The fourth proportional to 36,114.40, 54,128.40 and 18,575.20 is: 27,840.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,114.40 : 54,128.40 = 18,575.20 : x
  2. Step 2: Convert to fraction form
    36,114.40/54,128.40 = 18,575.20/x
  3. Step 3: Cross multiply
    36,114.40x = 54,128.40 × 18,575.20
  4. Step 4: Simplify right side
    36,114.40x = 1,005,445,855.68
  5. Step 5: Solve for x
    x = 1,005,445,855.68/36,114.40
  6. Step 6: Final answer
    x = 27,840.58

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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.