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Finding the Fourth Proportional to 13,216.10, 19,793.72 and 7,655.64

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Solution

The fourth proportional to 13,216.10, 19,793.72 and 7,655.64 is: 11,465.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,216.10 : 19,793.72 = 7,655.64 : x
  2. Step 2: Convert to fraction form
    13,216.10/19,793.72 = 7,655.64/x
  3. Step 3: Cross multiply
    13,216.10x = 19,793.72 × 7,655.64
  4. Step 4: Simplify right side
    13,216.10x = 151,533,556.30
  5. Step 5: Solve for x
    x = 151,533,556.30/13,216.10
  6. Step 6: Final answer
    x = 11,465.83

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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.