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Finding the Fourth Proportional to 16,965.12, 25,459.20 and 8,762.88

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Solution

The fourth proportional to 16,965.12, 25,459.20 and 8,762.88 is: 13,150.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,965.12 : 25,459.20 = 8,762.88 : x
  2. Step 2: Convert to fraction form
    16,965.12/25,459.20 = 8,762.88/x
  3. Step 3: Cross multiply
    16,965.12x = 25,459.20 × 8,762.88
  4. Step 4: Simplify right side
    16,965.12x = 223,095,914.50
  5. Step 5: Solve for x
    x = 223,095,914.50/16,965.12
  6. Step 6: Final answer
    x = 13,150.27

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1.5x scale

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.