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Finding the Fourth Proportional to 9,992.40, 14,992.20 and 9,632.40

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Solution

The fourth proportional to 9,992.40, 14,992.20 and 9,632.40 is: 14,452.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,992.40 : 14,992.20 = 9,632.40 : x
  2. Step 2: Convert to fraction form
    9,992.40/14,992.20 = 9,632.40/x
  3. Step 3: Cross multiply
    9,992.40x = 14,992.20 × 9,632.40
  4. Step 4: Simplify right side
    9,992.40x = 144,410,867.28
  5. Step 5: Solve for x
    x = 144,410,867.28/9,992.40
  6. Step 6: Final answer
    x = 14,452.07

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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.