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Finding the Fourth Proportional to 51,968.70, 77,843.70 and 43,220.70

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Solution

The fourth proportional to 51,968.70, 77,843.70 and 43,220.70 is: 64,740.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,968.70 : 77,843.70 = 43,220.70 : x
  2. Step 2: Convert to fraction form
    51,968.70/77,843.70 = 43,220.70/x
  3. Step 3: Cross multiply
    51,968.70x = 77,843.70 × 43,220.70
  4. Step 4: Simplify right side
    51,968.70x = 3,364,459,204.59
  5. Step 5: Solve for x
    x = 3,364,459,204.59/51,968.70
  6. Step 6: Final answer
    x = 64,740.11

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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.