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Finding the Fourth Proportional to 66,492.84, 99,608.04 and 49,871.64

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Solution

The fourth proportional to 66,492.84, 99,608.04 and 49,871.64 is: 74,709.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,492.84 : 99,608.04 = 49,871.64 : x
  2. Step 2: Convert to fraction form
    66,492.84/99,608.04 = 49,871.64/x
  3. Step 3: Cross multiply
    66,492.84x = 99,608.04 × 49,871.64
  4. Step 4: Simplify right side
    66,492.84x = 4,967,616,311.99
  5. Step 5: Solve for x
    x = 4,967,616,311.99/66,492.84
  6. Step 6: Final answer
    x = 74,709.04

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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.