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Finding the Fourth Proportional to 66,018.92, 98,941.98 and 57,217.64

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Solution

The fourth proportional to 66,018.92, 98,941.98 and 57,217.64 is: 85,751.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,018.92 : 98,941.98 = 57,217.64 : x
  2. Step 2: Convert to fraction form
    66,018.92/98,941.98 = 57,217.64/x
  3. Step 3: Cross multiply
    66,018.92x = 98,941.98 × 57,217.64
  4. Step 4: Simplify right side
    66,018.92x = 5,661,226,592.53
  5. Step 5: Solve for x
    x = 5,661,226,592.53/66,018.92
  6. Step 6: Final answer
    x = 85,751.58

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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.