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Finding the Fourth Proportional to 8,808.64, 13,210.80 and 2,965.12

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Solution

The fourth proportional to 8,808.64, 13,210.80 and 2,965.12 is: 4,446.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,808.64 : 13,210.80 = 2,965.12 : x
  2. Step 2: Convert to fraction form
    8,808.64/13,210.80 = 2,965.12/x
  3. Step 3: Cross multiply
    8,808.64x = 13,210.80 × 2,965.12
  4. Step 4: Simplify right side
    8,808.64x = 39,171,607.30
  5. Step 5: Solve for x
    x = 39,171,607.30/8,808.64
  6. Step 6: Final answer
    x = 4,446.95

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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.