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Finding the Fourth Proportional to 18,980.53, 28,451.73 and 6,492.01

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Solution

The fourth proportional to 18,980.53, 28,451.73 and 6,492.01 is: 9,731.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,980.53 : 28,451.73 = 6,492.01 : x
  2. Step 2: Convert to fraction form
    18,980.53/28,451.73 = 6,492.01/x
  3. Step 3: Cross multiply
    18,980.53x = 28,451.73 × 6,492.01
  4. Step 4: Simplify right side
    18,980.53x = 184,708,915.68
  5. Step 5: Solve for x
    x = 184,708,915.68/18,980.53
  6. Step 6: Final answer
    x = 9,731.49

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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.