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Finding the Fourth Proportional to 19,811.01, 29,717.10 and 8,711.94

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Solution

The fourth proportional to 19,811.01, 29,717.10 and 8,711.94 is: 13,068.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,811.01 : 29,717.10 = 8,711.94 : x
  2. Step 2: Convert to fraction form
    19,811.01/29,717.10 = 8,711.94/x
  3. Step 3: Cross multiply
    19,811.01x = 29,717.10 × 8,711.94
  4. Step 4: Simplify right side
    19,811.01x = 258,893,592.17
  5. Step 5: Solve for x
    x = 258,893,592.17/19,811.01
  6. Step 6: Final answer
    x = 13,068.17

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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.