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Finding the Fourth Proportional to 18,707.22, 28,064.04 and 9,347.64

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Solution

The fourth proportional to 18,707.22, 28,064.04 and 9,347.64 is: 14,023.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,707.22 : 28,064.04 = 9,347.64 : x
  2. Step 2: Convert to fraction form
    18,707.22/28,064.04 = 9,347.64/x
  3. Step 3: Cross multiply
    18,707.22x = 28,064.04 × 9,347.64
  4. Step 4: Simplify right side
    18,707.22x = 262,332,542.87
  5. Step 5: Solve for x
    x = 262,332,542.87/18,707.22
  6. Step 6: Final answer
    x = 14,023.06

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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.