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Finding the Fourth Proportional to 14,334.71, 21,501.86 and 6,939.81

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Solution

The fourth proportional to 14,334.71, 21,501.86 and 6,939.81 is: 10,409.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,334.71 : 21,501.86 = 6,939.81 : x
  2. Step 2: Convert to fraction form
    14,334.71/21,501.86 = 6,939.81/x
  3. Step 3: Cross multiply
    14,334.71x = 21,501.86 × 6,939.81
  4. Step 4: Simplify right side
    14,334.71x = 149,218,788.35
  5. Step 5: Solve for x
    x = 149,218,788.35/14,334.71
  6. Step 6: Final answer
    x = 10,409.62

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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.