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Finding the Fourth Proportional to 19,411.29, 29,109.76 and 6,927.97

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Solution

The fourth proportional to 19,411.29, 29,109.76 and 6,927.97 is: 10,389.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,411.29 : 29,109.76 = 6,927.97 : x
  2. Step 2: Convert to fraction form
    19,411.29/29,109.76 = 6,927.97/x
  3. Step 3: Cross multiply
    19,411.29x = 29,109.76 × 6,927.97
  4. Step 4: Simplify right side
    19,411.29x = 201,671,543.99
  5. Step 5: Solve for x
    x = 201,671,543.99/19,411.29
  6. Step 6: Final answer
    x = 10,389.39

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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.