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Finding the Fourth Proportional to 8,607.34, 12,909.30 and 3,926.08

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Solution

The fourth proportional to 8,607.34, 12,909.30 and 3,926.08 is: 5,888.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,607.34 : 12,909.30 = 3,926.08 : x
  2. Step 2: Convert to fraction form
    8,607.34/12,909.30 = 3,926.08/x
  3. Step 3: Cross multiply
    8,607.34x = 12,909.30 × 3,926.08
  4. Step 4: Simplify right side
    8,607.34x = 50,682,944.54
  5. Step 5: Solve for x
    x = 50,682,944.54/8,607.34
  6. Step 6: Final answer
    x = 5,888.34

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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.