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Finding the Fourth Proportional to 15,579.76, 23,372.72 and 5,719.13

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Solution

The fourth proportional to 15,579.76, 23,372.72 and 5,719.13 is: 8,579.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,579.76 : 23,372.72 = 5,719.13 : x
  2. Step 2: Convert to fraction form
    15,579.76/23,372.72 = 5,719.13/x
  3. Step 3: Cross multiply
    15,579.76x = 23,372.72 × 5,719.13
  4. Step 4: Simplify right side
    15,579.76x = 133,671,521.57
  5. Step 5: Solve for x
    x = 133,671,521.57/15,579.76
  6. Step 6: Final answer
    x = 8,579.82

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.