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Finding the Fourth Proportional to 92,743.20, 139,033.80 and 63,064.80

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Solution

The fourth proportional to 92,743.20, 139,033.80 and 63,064.80 is: 94,542.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,743.20 : 139,033.80 = 63,064.80 : x
  2. Step 2: Convert to fraction form
    92,743.20/139,033.80 = 63,064.80/x
  3. Step 3: Cross multiply
    92,743.20x = 139,033.80 × 63,064.80
  4. Step 4: Simplify right side
    92,743.20x = 8,768,138,790.24
  5. Step 5: Solve for x
    x = 8,768,138,790.24/92,743.20
  6. Step 6: Final answer
    x = 94,542.12

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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.