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Finding the Fourth Proportional to 66,963.48, 100,461.94 and 47,280.52

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Solution

The fourth proportional to 66,963.48, 100,461.94 and 47,280.52 is: 70,932.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,963.48 : 100,461.94 = 47,280.52 : x
  2. Step 2: Convert to fraction form
    66,963.48/100,461.94 = 47,280.52/x
  3. Step 3: Cross multiply
    66,963.48x = 100,461.94 × 47,280.52
  4. Step 4: Simplify right side
    66,963.48x = 4,749,892,763.41
  5. Step 5: Solve for x
    x = 4,749,892,763.41/66,963.48
  6. Step 6: Final answer
    x = 70,932.59

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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.