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Finding the Fourth Proportional to 14,575.92, 20,113.14 and 8,201.28

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Solution

The fourth proportional to 14,575.92, 20,113.14 and 8,201.28 is: 11,316.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,575.92 : 20,113.14 = 8,201.28 : x
  2. Step 2: Convert to fraction form
    14,575.92/20,113.14 = 8,201.28/x
  3. Step 3: Cross multiply
    14,575.92x = 20,113.14 × 8,201.28
  4. Step 4: Simplify right side
    14,575.92x = 164,953,492.82
  5. Step 5: Solve for x
    x = 164,953,492.82/14,575.92
  6. Step 6: Final answer
    x = 11,316.85

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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.