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Finding the Fourth Proportional to 66,492.36, 99,680.88 and 33,178.68

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Solution

The fourth proportional to 66,492.36, 99,680.88 and 33,178.68 is: 49,739.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,492.36 : 99,680.88 = 33,178.68 : x
  2. Step 2: Convert to fraction form
    66,492.36/99,680.88 = 33,178.68/x
  3. Step 3: Cross multiply
    66,492.36x = 99,680.88 × 33,178.68
  4. Step 4: Simplify right side
    66,492.36x = 3,307,280,019.64
  5. Step 5: Solve for x
    x = 3,307,280,019.64/66,492.36
  6. Step 6: Final answer
    x = 49,739.25

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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.