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Finding the Fourth Proportional to 17,203.60, 25,863.72 and 13,737.88

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Solution

The fourth proportional to 17,203.60, 25,863.72 and 13,737.88 is: 20,653.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,203.60 : 25,863.72 = 13,737.88 : x
  2. Step 2: Convert to fraction form
    17,203.60/25,863.72 = 13,737.88/x
  3. Step 3: Cross multiply
    17,203.60x = 25,863.72 × 13,737.88
  4. Step 4: Simplify right side
    17,203.60x = 355,312,681.71
  5. Step 5: Solve for x
    x = 355,312,681.71/17,203.60
  6. Step 6: Final answer
    x = 20,653.39

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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.