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Finding the Fourth Proportional to 19,798.29, 29,688.15 and 11,480.67

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Solution

The fourth proportional to 19,798.29, 29,688.15 and 11,480.67 is: 17,215.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,798.29 : 29,688.15 = 11,480.67 : x
  2. Step 2: Convert to fraction form
    19,798.29/29,688.15 = 11,480.67/x
  3. Step 3: Cross multiply
    19,798.29x = 29,688.15 × 11,480.67
  4. Step 4: Simplify right side
    19,798.29x = 340,839,853.06
  5. Step 5: Solve for x
    x = 340,839,853.06/19,798.29
  6. Step 6: Final answer
    x = 17,215.62

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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.