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Finding the Fourth Proportional to 14,871.85, 20,522.77 and 8,065.49

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Solution

The fourth proportional to 14,871.85, 20,522.77 and 8,065.49 is: 11,130.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,871.85 : 20,522.77 = 8,065.49 : x
  2. Step 2: Convert to fraction form
    14,871.85/20,522.77 = 8,065.49/x
  3. Step 3: Cross multiply
    14,871.85x = 20,522.77 × 8,065.49
  4. Step 4: Simplify right side
    14,871.85x = 165,526,155.88
  5. Step 5: Solve for x
    x = 165,526,155.88/14,871.85
  6. Step 6: Final answer
    x = 11,130.17

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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.