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Finding the Fourth Proportional to 9,909.75, 14,859.74 and 4,906.33

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Solution

The fourth proportional to 9,909.75, 14,859.74 and 4,906.33 is: 7,357.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,909.75 : 14,859.74 = 4,906.33 : x
  2. Step 2: Convert to fraction form
    9,909.75/14,859.74 = 4,906.33/x
  3. Step 3: Cross multiply
    9,909.75x = 14,859.74 × 4,906.33
  4. Step 4: Simplify right side
    9,909.75x = 72,906,846.86
  5. Step 5: Solve for x
    x = 72,906,846.86/9,909.75
  6. Step 6: Final answer
    x = 7,357.08

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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.