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Finding the Fourth Proportional to 14,797.52, 20,421.06 and 8,083.76

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Solution

The fourth proportional to 14,797.52, 20,421.06 and 8,083.76 is: 11,155.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,797.52 : 20,421.06 = 8,083.76 : x
  2. Step 2: Convert to fraction form
    14,797.52/20,421.06 = 8,083.76/x
  3. Step 3: Cross multiply
    14,797.52x = 20,421.06 × 8,083.76
  4. Step 4: Simplify right side
    14,797.52x = 165,078,999.04
  5. Step 5: Solve for x
    x = 165,078,999.04/14,797.52
  6. Step 6: Final answer
    x = 11,155.86

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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.