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Finding the Fourth Proportional to 15,872.58, 21,903.12 and 8,798.76

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Solution

The fourth proportional to 15,872.58, 21,903.12 and 8,798.76 is: 12,141.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,872.58 : 21,903.12 = 8,798.76 : x
  2. Step 2: Convert to fraction form
    15,872.58/21,903.12 = 8,798.76/x
  3. Step 3: Cross multiply
    15,872.58x = 21,903.12 × 8,798.76
  4. Step 4: Simplify right side
    15,872.58x = 192,720,296.13
  5. Step 5: Solve for x
    x = 192,720,296.13/15,872.58
  6. Step 6: Final answer
    x = 12,141.71

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.