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Finding the Fourth Proportional to 19,061.80, 28,593.78 and 5,916.04

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Solution

The fourth proportional to 19,061.80, 28,593.78 and 5,916.04 is: 8,874.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,061.80 : 28,593.78 = 5,916.04 : x
  2. Step 2: Convert to fraction form
    19,061.80/28,593.78 = 5,916.04/x
  3. Step 3: Cross multiply
    19,061.80x = 28,593.78 × 5,916.04
  4. Step 4: Simplify right side
    19,061.80x = 169,161,946.23
  5. Step 5: Solve for x
    x = 169,161,946.23/19,061.80
  6. Step 6: Final answer
    x = 8,874.40

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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.