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Finding the Fourth Proportional to 19,772.51, 29,655.63 and 6,624.99

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Solution

The fourth proportional to 19,772.51, 29,655.63 and 6,624.99 is: 9,936.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,772.51 : 29,655.63 = 6,624.99 : x
  2. Step 2: Convert to fraction form
    19,772.51/29,655.63 = 6,624.99/x
  3. Step 3: Cross multiply
    19,772.51x = 29,655.63 × 6,624.99
  4. Step 4: Simplify right side
    19,772.51x = 196,468,252.19
  5. Step 5: Solve for x
    x = 196,468,252.19/19,772.51
  6. Step 6: Final answer
    x = 9,936.44

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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.