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Finding the Fourth Proportional to 18,421.48, 27,632.22 and 4,570.48

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Solution

The fourth proportional to 18,421.48, 27,632.22 and 4,570.48 is: 6,855.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,421.48 : 27,632.22 = 4,570.48 : x
  2. Step 2: Convert to fraction form
    18,421.48/27,632.22 = 4,570.48/x
  3. Step 3: Cross multiply
    18,421.48x = 27,632.22 × 4,570.48
  4. Step 4: Simplify right side
    18,421.48x = 126,292,508.87
  5. Step 5: Solve for x
    x = 126,292,508.87/18,421.48
  6. Step 6: Final answer
    x = 6,855.72

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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.