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Finding the Fourth Proportional to 16,721.76, 25,060.64 and 9,329.70

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Solution

The fourth proportional to 16,721.76, 25,060.64 and 9,329.70 is: 13,982.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,721.76 : 25,060.64 = 9,329.70 : x
  2. Step 2: Convert to fraction form
    16,721.76/25,060.64 = 9,329.70/x
  3. Step 3: Cross multiply
    16,721.76x = 25,060.64 × 9,329.70
  4. Step 4: Simplify right side
    16,721.76x = 233,808,206.36
  5. Step 5: Solve for x
    x = 233,808,206.36/16,721.76
  6. Step 6: Final answer
    x = 13,982.27

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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.