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Finding the Fourth Proportional to 66,887.49, 100,347.98 and 47,204.49

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Solution

The fourth proportional to 66,887.49, 100,347.98 and 47,204.49 is: 70,818.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,887.49 : 100,347.98 = 47,204.49 : x
  2. Step 2: Convert to fraction form
    66,887.49/100,347.98 = 47,204.49/x
  3. Step 3: Cross multiply
    66,887.49x = 100,347.98 × 47,204.49
  4. Step 4: Simplify right side
    66,887.49x = 4,736,874,982.41
  5. Step 5: Solve for x
    x = 4,736,874,982.41/66,887.49
  6. Step 6: Final answer
    x = 70,818.55

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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.