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Finding the Fourth Proportional to 19,615.53, 29,405.88 and 14,054.88

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Solution

The fourth proportional to 19,615.53, 29,405.88 and 14,054.88 is: 21,069.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,615.53 : 29,405.88 = 14,054.88 : x
  2. Step 2: Convert to fraction form
    19,615.53/29,405.88 = 14,054.88/x
  3. Step 3: Cross multiply
    19,615.53x = 29,405.88 × 14,054.88
  4. Step 4: Simplify right side
    19,615.53x = 413,296,114.69
  5. Step 5: Solve for x
    x = 413,296,114.69/19,615.53
  6. Step 6: Final answer
    x = 21,069.84

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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.