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Finding the Fourth Proportional to 15,045.92, 20,772.84 and 9,670.76

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Solution

The fourth proportional to 15,045.92, 20,772.84 and 9,670.76 is: 13,351.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,045.92 : 20,772.84 = 9,670.76 : x
  2. Step 2: Convert to fraction form
    15,045.92/20,772.84 = 9,670.76/x
  3. Step 3: Cross multiply
    15,045.92x = 20,772.84 × 9,670.76
  4. Step 4: Simplify right side
    15,045.92x = 200,889,150.16
  5. Step 5: Solve for x
    x = 200,889,150.16/15,045.92
  6. Step 6: Final answer
    x = 13,351.74

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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.