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Finding the Fourth Proportional to 21,596.72, 29,809.04 and 14,061.87

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Solution

The fourth proportional to 21,596.72, 29,809.04 and 14,061.87 is: 19,409.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,596.72 : 29,809.04 = 14,061.87 : x
  2. Step 2: Convert to fraction form
    21,596.72/29,809.04 = 14,061.87/x
  3. Step 3: Cross multiply
    21,596.72x = 29,809.04 × 14,061.87
  4. Step 4: Simplify right side
    21,596.72x = 419,170,775.00
  5. Step 5: Solve for x
    x = 419,170,775.00/21,596.72
  6. Step 6: Final answer
    x = 19,409.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.