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Finding the Fourth Proportional to 14,998.60, 20,697.72 and 8,284.08

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Solution

The fourth proportional to 14,998.60, 20,697.72 and 8,284.08 is: 11,431.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,998.60 : 20,697.72 = 8,284.08 : x
  2. Step 2: Convert to fraction form
    14,998.60/20,697.72 = 8,284.08/x
  3. Step 3: Cross multiply
    14,998.60x = 20,697.72 × 8,284.08
  4. Step 4: Simplify right side
    14,998.60x = 171,461,568.30
  5. Step 5: Solve for x
    x = 171,461,568.30/14,998.60
  6. Step 6: Final answer
    x = 11,431.84

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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.