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Finding the Fourth Proportional to 18,970.61, 28,460.07 and 5,824.04

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Solution

The fourth proportional to 18,970.61, 28,460.07 and 5,824.04 is: 8,737.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,970.61 : 28,460.07 = 5,824.04 : x
  2. Step 2: Convert to fraction form
    18,970.61/28,460.07 = 5,824.04/x
  3. Step 3: Cross multiply
    18,970.61x = 28,460.07 × 5,824.04
  4. Step 4: Simplify right side
    18,970.61x = 165,752,443.78
  5. Step 5: Solve for x
    x = 165,752,443.78/18,970.61
  6. Step 6: Final answer
    x = 8,737.33

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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.