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Finding the Fourth Proportional to 19,282.01, 28,931.20 and 6,808.82

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Solution

The fourth proportional to 19,282.01, 28,931.20 and 6,808.82 is: 10,216.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,282.01 : 28,931.20 = 6,808.82 : x
  2. Step 2: Convert to fraction form
    19,282.01/28,931.20 = 6,808.82/x
  3. Step 3: Cross multiply
    19,282.01x = 28,931.20 × 6,808.82
  4. Step 4: Simplify right side
    19,282.01x = 196,987,171.51
  5. Step 5: Solve for x
    x = 196,987,171.51/19,282.01
  6. Step 6: Final answer
    x = 10,216.11

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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.