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Finding the Fourth Proportional to 10,479.46, 15,720.76 and 3,460.22

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Solution

The fourth proportional to 10,479.46, 15,720.76 and 3,460.22 is: 5,190.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,479.46 : 15,720.76 = 3,460.22 : x
  2. Step 2: Convert to fraction form
    10,479.46/15,720.76 = 3,460.22/x
  3. Step 3: Cross multiply
    10,479.46x = 15,720.76 × 3,460.22
  4. Step 4: Simplify right side
    10,479.46x = 54,397,263.11
  5. Step 5: Solve for x
    x = 54,397,263.11/10,479.46
  6. Step 6: Final answer
    x = 5,190.84

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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.