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Finding the Fourth Proportional to 19,956.61, 29,926.65 and 6,810.04

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Solution

The fourth proportional to 19,956.61, 29,926.65 and 6,810.04 is: 10,212.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,956.61 : 29,926.65 = 6,810.04 : x
  2. Step 2: Convert to fraction form
    19,956.61/29,926.65 = 6,810.04/x
  3. Step 3: Cross multiply
    19,956.61x = 29,926.65 × 6,810.04
  4. Step 4: Simplify right side
    19,956.61x = 203,801,683.57
  5. Step 5: Solve for x
    x = 203,801,683.57/19,956.61
  6. Step 6: Final answer
    x = 10,212.24

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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.