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Finding the Fourth Proportional to 14,920.88, 20,591.33 and 8,207.01

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Solution

The fourth proportional to 14,920.88, 20,591.33 and 8,207.01 is: 11,325.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,920.88 : 20,591.33 = 8,207.01 : x
  2. Step 2: Convert to fraction form
    14,920.88/20,591.33 = 8,207.01/x
  3. Step 3: Cross multiply
    14,920.88x = 20,591.33 × 8,207.01
  4. Step 4: Simplify right side
    14,920.88x = 168,993,210.19
  5. Step 5: Solve for x
    x = 168,993,210.19/14,920.88
  6. Step 6: Final answer
    x = 11,325.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.