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Finding the Fourth Proportional to 66,975.84, 92,439.40 and 44,315.28

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Solution

The fourth proportional to 66,975.84, 92,439.40 and 44,315.28 is: 61,163.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,975.84 : 92,439.40 = 44,315.28 : x
  2. Step 2: Convert to fraction form
    66,975.84/92,439.40 = 44,315.28/x
  3. Step 3: Cross multiply
    66,975.84x = 92,439.40 × 44,315.28
  4. Step 4: Simplify right side
    66,975.84x = 4,096,477,894.03
  5. Step 5: Solve for x
    x = 4,096,477,894.03/66,975.84
  6. Step 6: Final answer
    x = 61,163.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.