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Finding the Fourth Proportional to 92,710.20, 138,968.10 and 36,528.60

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Solution

The fourth proportional to 92,710.20, 138,968.10 and 36,528.60 is: 54,754.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,710.20 : 138,968.10 = 36,528.60 : x
  2. Step 2: Convert to fraction form
    92,710.20/138,968.10 = 36,528.60/x
  3. Step 3: Cross multiply
    92,710.20x = 138,968.10 × 36,528.60
  4. Step 4: Simplify right side
    92,710.20x = 5,076,310,137.66
  5. Step 5: Solve for x
    x = 5,076,310,137.66/92,710.20
  6. Step 6: Final answer
    x = 54,754.60

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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.