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Finding the Fourth Proportional to 14,272.74, 21,403.78 and 4,910.11

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Solution

The fourth proportional to 14,272.74, 21,403.78 and 4,910.11 is: 7,363.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,272.74 : 21,403.78 = 4,910.11 : x
  2. Step 2: Convert to fraction form
    14,272.74/21,403.78 = 4,910.11/x
  3. Step 3: Cross multiply
    14,272.74x = 21,403.78 × 4,910.11
  4. Step 4: Simplify right side
    14,272.74x = 105,094,914.22
  5. Step 5: Solve for x
    x = 105,094,914.22/14,272.74
  6. Step 6: Final answer
    x = 7,363.33

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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.