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Finding the Fourth Proportional to 68,865.02, 103,200.52 and 54,762.46

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Solution

The fourth proportional to 68,865.02, 103,200.52 and 54,762.46 is: 82,066.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,865.02 : 103,200.52 = 54,762.46 : x
  2. Step 2: Convert to fraction form
    68,865.02/103,200.52 = 54,762.46/x
  3. Step 3: Cross multiply
    68,865.02x = 103,200.52 × 54,762.46
  4. Step 4: Simplify right side
    68,865.02x = 5,651,514,348.48
  5. Step 5: Solve for x
    x = 5,651,514,348.48/68,865.02
  6. Step 6: Final answer
    x = 82,066.55

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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.