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Finding the Fourth Proportional to 18,698.01, 28,052.33 and 7,612.66

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Solution

The fourth proportional to 18,698.01, 28,052.33 and 7,612.66 is: 11,421.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,698.01 : 28,052.33 = 7,612.66 : x
  2. Step 2: Convert to fraction form
    18,698.01/28,052.33 = 7,612.66/x
  3. Step 3: Cross multiply
    18,698.01x = 28,052.33 × 7,612.66
  4. Step 4: Simplify right side
    18,698.01x = 213,552,850.50
  5. Step 5: Solve for x
    x = 213,552,850.50/18,698.01
  6. Step 6: Final answer
    x = 11,421.15

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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.