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Finding the Fourth Proportional to 64,992.99, 97,492.94 and 20,623.21

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Solution

The fourth proportional to 64,992.99, 97,492.94 and 20,623.21 is: 30,935.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,992.99 : 97,492.94 = 20,623.21 : x
  2. Step 2: Convert to fraction form
    64,992.99/97,492.94 = 20,623.21/x
  3. Step 3: Cross multiply
    64,992.99x = 97,492.94 × 20,623.21
  4. Step 4: Simplify right side
    64,992.99x = 2,010,617,375.14
  5. Step 5: Solve for x
    x = 2,010,617,375.14/64,992.99
  6. Step 6: Final answer
    x = 30,935.91

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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.