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Finding the Fourth Proportional to 19,155.00, 28,759.15 and 9,801.47

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Solution

The fourth proportional to 19,155.00, 28,759.15 and 9,801.47 is: 14,715.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,155.00 : 28,759.15 = 9,801.47 : x
  2. Step 2: Convert to fraction form
    19,155.00/28,759.15 = 9,801.47/x
  3. Step 3: Cross multiply
    19,155.00x = 28,759.15 × 9,801.47
  4. Step 4: Simplify right side
    19,155.00x = 281,882,042.35
  5. Step 5: Solve for x
    x = 281,882,042.35/19,155.00
  6. Step 6: Final answer
    x = 14,715.85

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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.